Simplified Tools

Tools

1069 tools

List of available tools
Blue-Green Deployment Planner Plan a blue-green deployment with weighted traffic waves, bake gates, rollback triggers, command drafts, and exposure charts for review.
CSS Border Radius Generator Build border-radius CSS with sliders, elliptical slash syntax, live previews, Tailwind utility output, fit audits, and table or JSON exports.
CSS Box Shadow Generator Build a CSS box-shadow stack from presets or custom layers, preview light or dark surfaces, and copy CSS with a readable layer ledger.
CSS Flexbox Generator Build flexbox CSS for rows, columns, wrapping, gaps, and optional child sizing, with a live preview, property notes, and scaffold output.
CSS Grid Generator Generate responsive CSS Grid rules with auto-fit, auto-fill, or fixed columns, plus preview, fit projections, and property notes.
Canary Deployment Planner Plan a canary rollout with traffic steps, bake windows, guardrail thresholds, rollback actions, risk scoring, and exposure charts.
JSON Schema Generator Turn sample JSON into a draft-aware JSON Schema with required-field policy, nullable handling, format hints, property rows, and review notes.
NTP Config Generator Generate NTP configuration for chrony, ntpd, systemd-timesyncd, or Cisco devices, with source ledgers, access rules, and fallback warnings.
OpenTelemetry Collector Config Generator Build Collector YAML for traces, metrics, or logs with OTLP listeners, exporters, memory guards, batching, and rollout audit checks.
README Generator Draft a README from project facts, setup commands, usage notes, and license choices, then review section gaps and repository checklist items.
Route Table Longest Match Checker Check which IPv4 or IPv6 route wins for a destination, with longest-prefix ranking, tie-break audit, and host-bit cleanup warnings.
Secrets Rotation Planner Plan a credential rotation with stages, consumer checks, risk scoring, rollback gates, and an exposure timeline for old and new secrets.
Sitemap XML Generator Generate sitemap XML for same-host URLs, with lastmod policies, optional crawl hints, dedupe review, and protocol limit checks.
Test Data Generator Generate repeatable synthetic test data from field recipes, seeds, row limits, blank-rate settings, and CSV, JSON, NDJSON, or SQL output.
Web App Manifest Generator Build a web app manifest with a publishing-flow visual, install markup, icon asset ledger, and checklist warnings before deployment.
.env File Generator Turn pasted key-value rows into .env and .env.example files with quote checks, duplicate-key review, and masked secret previews.
.gitignore Generator Draft a team-safe .gitignore from project, stack, OS, editor, and secret policies, with duplicate cleanup and broad-pattern warnings.
.gitignore Pattern Coverage Checker Check whether .gitignore rules cover generated or sensitive paths, including negations, tracked files, and coverage targets before commit.
.htaccess Generator Build a .htaccess draft from Apache section presets, reorder rule blocks, and review warnings, rule counts, and shareable state before upload.
16-Factor Personality Profile Assessment Take a 163-item IPIP-style 16-factor profile, see factor means and pole leans, and avoid mistaking it for an official 16PF report.
3D Print Volumetric Flow Calculator Calculate FDM volumetric flow from bead size, speed, and flow multiplier, then set safer max-flow caps and slicer speed limits.
7 Wonders Score Calculator Score a finished 7 Wonders game, convert remaining coins, resolve treasury tie-breaks, and compare rankings, audits, and point-stack charts.
7-Minute Workout Timer Run a guided 7-minute workout timer with preset circuits, paired timing sliders, local cues, plan tables, a load chart, and routine JSON.
ACL Wildcard Mask Calculator Calculate IPv4 ACL wildcard masks from CIDR, subnet, host, and any entries, then generate ACE lines with broad-match and overlap audits.
ACME DNS Challenge Readiness Check Check whether an ACME DNS-01 owner is ready by comparing TXT, CNAME, NS delegation, resolver views, tokens, and practical retry hints.
ACME HTTP 01 Readiness Validator Check ACME HTTP-01 retry readiness with route, redirect, body-match, IPv6, cache, CDN/WAF, and backend consistency evidence for retries.
ACS Mini Attachment Style Snapshot (Proxy) Reflect on one adult attachment pattern with an original 16-item proxy, four style totals, profile-balance notes, and cue rows.
AMRAP Workout Timer Plan and run a time-capped AMRAP workout with movement parsing, pace sliders, live score logging, charts, session ledgers, and exports.
API Error Budget Analyzer Analyze API error-budget burn from status counts or access logs with SLO projections, status-code mix checks, and burn-rate guardrails.
API Gateway Cost Calculator Estimate monthly API Gateway spend across HTTP, REST, Private REST, and WebSocket traffic with payload, cache, transfer, and budget checks.
API Key Generator Generate API keys with prefixes, environment labels, public IDs, secret entropy checks, checksum segments, and SHA-256 storage hashes.
API Pagination Window Calculator Calculate an API pagination window from item counts, page caps, rate limits, latency, and workers, with shard timing and page-size tradeoff charts.
APR Calculator Calculate APR from loan proceeds, upfront fees, payment timing, and final payments, with ledger, schedule, and chart exports for quote checks.
AWS Lambda Cost Calculator Estimate Lambda monthly spend from requests, duration, memory, architecture, provisioned windows, streaming bytes, and editable AWS rates.
Acceptance Criteria Generator Turn a backlog item into clear acceptance criteria, with Given-When-Then drafts, scenario ledgers, edge-case rows, and review checks.
Accessibility Ramp Slope Calculator Plan or check an ADA-style accessibility ramp from rise and run, with slope ratio, landing, handrail, edge-protection, and material estimates.
Ad Network Detector Scan a public page for ad-network signals, ads.txt seller matches, redirects, TLS fetch issues, confidence scores, and action priorities.
Adult ADHD Self-Report Scale (ASRS v1.1) 6-Question Screener Screen adult ADHD symptoms with the ASRS v1.1 six-question screener, comparing shaded-count and 24-point cutoffs with follow-up notes.
Age Calculator Calculate age from birth and as-of dates, with calendar totals, elapsed days, leap-day rules, birthday countdowns, and milestone planning.
Air Compressor CFM Calculator Choose an air compressor by delivered SCFM, PSI, duty cycle, tank buffer, and candidate headroom before buying or sharing shop air.
Air Purifier CADR Calculator Calculate the CADR an air purifier needs from room volume and ACH, then compare effective unit capacity with fit checks and coverage charts.
Aircraft Weight Balance Calculator Build an aircraft weight-and-balance worksheet with station arms, fuel burn, CG envelope checks, and phase-by-phase load totals.
Airport Code Lookup Look up IATA and ICAO airport codes by code, city, country, or airport name, with match evidence, review cues, and nearby coordinate context.
Alcohol Screener Comparator Compare AUDIT-C, AUDIT-10, and CAGE routes by screening goal, time, setting, and cutoff lens before choosing a first alcohol screener.
Alcohol Use Disorders Identification Test (AUDIT-10) Score the 10-item AUDIT alcohol screen with WHO risk zones, domain patterns, priority cues, and follow-up guidance you can review.
Alcohol Use Disorders Identification Test (AUDIT-C) Score AUDIT-C alcohol screening answers, compare common 3+/4+ and VA/DoD 5+ cues, and review which item most drives follow-up.
Alert Noise Rate Calculator Measure alert noise from classified CSV rows, compare it with a target, and identify noisy routes, repeat groups, ack delays, and cleanup gaps.
Alphabet Matching Sheet Generator Create alphabet matching worksheets from letter sets and cue words, with seeded target order, distractors, answer keys, and print-ready output.
Alternative DCV Checker Check alternative DCV readiness for DNS, CNAME, HTTP, and HTTPS proofs using CA tokens, CSR hashes, resolver results, and fetch evidence.
Anger & Irritability Proxy Check Review anger and irritability over the past 2 weeks with an 8-item browser-local proxy, domain scores, high-item cues, and charts.
Ansible Inventory Generator Build a static Ansible INI inventory from host rows, group variables, and parent groups, with validation warnings and a host ledger.
Apache Virtual Host Generator Generate an Apache virtual host draft for static, PHP-FPM, or proxy sites, with TLS choices, directive review, and activation checks.
Appliance Energy Cost Calculator Estimate what an appliance costs to run from watts, amps, annual kWh, runtime, standby draw, and electricity rates, with scenario checks.
Application Log Pattern Analyzer Analyze application log excerpts in your browser, group repeated failure patterns, and review severity counts, time buckets, and triage rows.
Application Programming Interface (API) Testing Tool Test an HTTP API from your browser with method, headers, auth, body modes, cURL import, CORS clues, response traces, and saved presets.
Aquarium Screensaver Simulator Tune a browser aquarium screensaver with fish, bubbles, currents, lighting, fullscreen preview, and tank metrics for calmer display loops.
Aquarium Substrate Amount Calculator Estimate aquarium substrate from tank footprint, sloped depth, product density, and bag size, with reserve, cost, displacement, and setup notes.
Area Code Lookup Lookup NANP area codes by code, phone number, city, state, or province with status, overlays, dialing plans, and caller-location caveats.
Arithmetic Practice Generator Generate arithmetic practice sheets from operations, number ranges, and a replay seed, with printable student pages, answer keys, and setup warnings.
AsciiMath Editor Edit AsciiMath with live rendering, conversion checks, function metrics, and reusable LaTeX, MathML, image, or PDF outputs for handoff.
Attendance Rate Calculator Calculate attendance rate from present days or absence counts, then check target cushion, recovery days, projections, and copyable reports.
Attendance Sheet Generator Build printable attendance sheets from roster text or CSV, date ranges, and mark columns, with duplicate checks and roster review outputs.
Attenuator Pad Calculator Calculate Pi or T attenuator pad values for matched RF, video, or audio lines, then check preferred resistor rounding and wattage.
Attic Ventilation Calculator Calculate attic net free ventilation area, split intake and exhaust targets, and size soffit, ridge, roof, or gable vents from product NFA ratings.
Audio File Size Calculator Estimate audio file size for WAV, MP3, AAC, Opus, and multitrack stems with buffer, media-fit checks, duration charts, and exports.
Audit Log Anomalies Analyzer Analyze audit log exports locally for failure bursts, privilege changes, source shifts, and after-hours activity with risk-ranked evidence.
Autonomous System Number (ASN) Information Lookup Look up an ASN or public IP to identify the routed network, announced prefixes, neighbour ASNs, RDAP contacts, and peering context.
Avro Schema Compatibility Validator Compare released and proposed Avro schemas by compatibility mode, with field-level blockers, alias/default checks, and registry-ready notes.
BFI-2-S Aligned Proxy Assessment Score a 30-item BFI-2-S-style IPIP proxy, compare five domain means, and review two-item facet clues without treating results as norms.
BFI-44 Style Big Five Proxy Assessment Build a 44-item Big Five proxy profile with trait means, cluster support checks, a shape map, answer review, and clear non-normed limits.
BGP AS Path Policy Checker Check pasted BGP AS paths against origin, first-hop, blocked-ASN, regex, length, and prepend rules with route verdicts and finding charts.
BGP Prefix List Generator Generate BGP prefix-list configuration from CIDR rows for Cisco, Arista, FRR, SONiC, or Junos, with shadowing and terminal-rule checks.
BGP Route Scale Calculator Estimate BGP route memory, peer fanout, and churn pressure from prefixes, retained paths, route bytes, budgets, and update rates.
BIMI Record Generator Generate a BIMI DNS TXT record with logo, evidence, selector, provider steps, and readiness checks for DMARC-aligned mail rollout.
BIMI Validation Report Validate BIMI for a domain and selector with DNS, DMARC, SVG logo, and certificate evidence checks, then review readiness notes.
BIS/BAS Behavioral Style Proxy Assessment Map your BIS/BAS-style motivation profile across caution, drive, reward response, and fun seeking with keyed scores and answer review.
BMI-for-Age Percentile Calculator Calculate a child's BMI-for-age percentile from BMI or height and weight, then compare WHO or CDC bands, z-score, P95, and severe-BMI gates.
BMR & TDEE Calculator Calculate BMR, TDEE, calorie targets, weekly pace, and macros with formula comparisons, BMI context, and warnings for aggressive plans.
BRI-12 Resilience Proxy Assessment Run a 12-item resilience proxy, see total and lane scores for recovery, adaptation, support, and steady anchors, and compare a prior check-in.
Baby Formula Amount Calculator Estimate daily baby formula from age, weight, formula share, feed count, and solids stage, with per-bottle ranges and safety checks.
Baby Formula Cost Calculator Budget baby formula from prepared ounces, label yield, price, waste, stock, and shipping with monthly cost and reorder checks.
Babysitting Rate Calculator Estimate a babysitting quote from local rates, children, ages, timing, duties, minimum hours, fees, and clean-number rounding.
Backup Capacity Calculator Estimate backup repository capacity from retention, change rate, copy tiers, growth, reserves, raw overhead, budget runway, and exportable planning tables.
Backup Restore Time Calculator Estimate backup restore time from size, compression, tested throughput, fixed recovery phases, and RTO margin checks for recovery planning.
Backup Rotation Planner Plan GFS backup rotation storage from full and incremental sizes, tune retention tiers, and compare capacity, audit, horizon, chart, and JSON outputs.
Bakers Percentage Calculator Scale a bread formula from flour or dough weight, account for starter flour and water, and get ingredient weights with hydration checks.
Baluster Spacing Calculator Calculate baluster spacing for rail sections with count, clear-gap margin, rounded field marks, stair rake conversion, and a buy list.
Bandwidth Delay Product Calculator Calculate BDP from bandwidth and RTT, size per-stream TCP windows, and compare current buffers with stream count, overhead, and scaling warnings.
Barbell Plate Load Calculator Plan a barbell target load from bar, collar, plate inventory, and fit mode, with per-side plates, nearby reachable loads, and warm-up rows.
Barcode Generator Generate Code 128, EAN-13, UPC-A, or Code 39 barcodes with check-digit handling, quiet-zone warnings, and label readiness checks.
Base64 Encoder and Decoder Encode or decode Base64 text and files, switch alphabets, repair padding, inspect bytes, and build Data URLs without uploading payloads.
Bathroom Exhaust Fan CFM Calculator Size a bathroom exhaust fan from room size, fixtures, duct losses, moisture load, candidate CFM, sone target, and timer coverage.
Battery Charge Time Calculator Estimate battery charge time from capacity, SOC window, charger or source limits, taper behavior, C-rate guidance, deadline fit, and energy cost.
Beck Anxiety Inventory (BAI) Assessment Score the 21-item BAI for past-week anxiety symptoms, then review severity bands, the 16+ cue, symptom mix, high items, and prior-score change.
Beck Depression Inventory-II (BDI-II) Score 21 BDI-II depression-symptom answers over two weeks, see severity bands, Item 9 safety context, driver items, and answer-review exports.
Beck Hopelessness Scale (BHS) Assessment Assess past-week hopelessness with 20 BHS true-or-false answers, severity bands, score-source charts, and support follow-up cues.
Beginning Sounds Sheet Generator Create beginning-sound worksheets from word lists, with sound inference, review notes, answer keys, and a sound mix chart for balance checks.
Behavior Reward Chart Generator Build a positive behavior reward chart with observable goals, age guidance, space checks, coaching notes, and a printable sticker map.
Bicycle Tire Pressure Calculator Calculate front and rear bicycle tire pressure from system weight, measured tire and rim width, setup, surface, temperature, and limit checks.
Big Five 10-Item Proxy Assessment Build a 10-item Big Five proxy profile with two-item trait means, pair-gap cautions, local bands, and answer-review checks before sharing.
Big Five Aspect Scales (BFAS) Assessment Answer 100 BFAS-style statements to profile ten Big Five aspects, compare paired domain means, and review reverse-keyed scores before sharing.
Big Five Assessment Score a 50-item IPIP Big Five profile, compare factor means and item spread, and review non-normed trait signals before sharing or retaking.
Big Five Assessment Comparator Compare Big Five questionnaires by item budget, detail depth, source basis, and goal, then choose a domain, facet, or aspect assessment.
Big Five Inventory-2 Style Proxy Assessment Assess a 60-item BFI-2-style proxy profile with five domain means, 15 facet scores, spread checks, and answer-review exports.
Bike Chain Length Calculator Calculate a bicycle chain cut length from chainstay and gear sizes, compare equations, and see stock-chain cut and fit warnings before cutting.
Bill Split Calculator Split a shared receipt into exact-cent or rounded payments with tax, tip basis, discounts, service charges, payer notes, and charts.
Billable Hours Calculator Calculate rounded billable hours from duration, clock, or timer entries with write-downs, realization rates, warnings, and client rollups.
Billable Utilization Target Calculator Plan a billable utilization target from delivery capacity, rate, realization, revenue goals, benchmark fit, and protected non-billable time.
Billing Document Generator Draft an invoice or purchase order from line items and tax, then review totals, ledger rows, copy-ready text, and JSON before sharing.
Binary Decimal Hex Converter Convert one integer across binary, decimal, hex, octal, and Base36, with signed width, endian, byte stream, bit map, and wrap checks.
Bingo Card Generator Build printable bingo cards from your own prompt list with seeded shuffles, coverage checks, caller deck controls, and PDF or image exports.
Birthday Calculator Calculate exact age, next-birthday countdowns, leap-day birthdays, milestone ledgers, and planning windows from any birth and reference date.
Bitwise Operations Calculator Calculate bitwise masks, shifts, rotations, and flags with fixed-width binary, hex, signed readouts, bit maps, width audits, and density charts.
Blacklist Checker (DNSBL/RBL) Check a mail host or IP against DNSBL/RBL lists, separate listings from resolver limits, and capture TXT evidence for follow-up.
Bleach Dilution Calculator Mix bleach dilution by target ppm, percent, or ratio, with measured bleach and water volumes plus safety checks for stock strength and batch size.
Block Randomization Schedule Generator Generate a reproducible block randomization schedule with arm ratios, strata, seeded blocks, balance checks, CSV, and JSON review output.
Board Game Sleeve Count Calculator Plan board-game sleeve purchases from card groups, sleeve sizes, pack counts, reserve sleeves, cost, and box-bulk warnings before ordering.
Body Composition Calculator Calculate body-fat percentage from height, weight, and tape measurements, then compare methods, lean mass, waist risk, and target weight.
Body Mass Index (BMI) Calculator Calculate adult BMI from height and weight, compare WHO, Asia-Pacific, and NIH/CDC bands, and add waist-to-height and target-weight context.
Body Metrics Calculator Calculate BMI, waist ratios, body-fat estimates, lean and fat mass, BSA, and weight references with risk bands and method-spread warnings.
Body Recomposition Calculator Estimate a body recomposition target from weight, body-fat, lean-mass change, calories, and runway, with uncertainty and pace flags.
Body Surface Area Calculator Calculate body surface area from height and weight, compare five formulas, and review BMI gates, dose caps, reference lanes, and rounding effects.
Bodyweight Workout Guide Build a no-equipment bodyweight workout from your goal, level, time, and movement limits with swaps, readiness checks, and charts.
Bonus Pool Allocation Calculator Plan bonus awards from one pool with eligible rows, weighting, proration, caps, floors, charts, and a balance ledger before payroll review.
Bonus Tax Calculator Estimate your 2026 U.S. bonus take-home pay after federal supplemental withholding, FICA, deferrals, and state/local rate assumptions.
Boxing Round Timer Run a boxing round timer with setup, rest, warnings, halfway cues, sound, vibration, round-load charts, logs, and cue-sheet exports.
Boxing Scoreboard Tracker Record a boxing scorecard with 10-point round buttons, knockdown counts, point deductions, warning notes, a score chart, and event ledger.
Braille Alphabet Quiz Practice Braille letters and numbers with seeded multiple-choice drills, score percentages, missed-answer review, and an accuracy chart.
Bread Water Temperature Calculator Calculate bread mixing water temperature from desired dough temperature, flour, room, preferment, and friction, with calibration guidance.
Break-Even Calculator Calculate break-even units, target-profit volume, and planned profit, then stress-test price and variable-cost changes before committing spend.
Breast Milk Storage Time Calculator Calculate breast milk use-by times from pumped, thawed, warmed, or leftover milk with storage windows, copy-ready labels, charts, and cautions.
Breathing Pacer Run a breathing pacer with custom inhale, hold, and exhale timing, a live phase ring, comfort checks, cue controls, charts, and exports.
Brief Resilience Scale (BRS) Assessment Score the six-item BRS, see the mean resilience band, and review reverse-scored answers, weak supports, gauge exports, and share links.
Brief Resilient Coping Scale (BRCS) Assessment Score the four BRCS coping items, see the 4-20 resilient-coping band, and compare support gaps before sharing or rechecking later.
Brief Rumination Response Scale Assess a 10-item rumination pattern, compare brooding with reflective pondering, and turn the highest loops into a non-diagnostic follow-up note.
Brief Self-Control Scale (BSCS) Assessment Assess trait self-control with the 13-item BSCS, including reverse scoring, total and mean scores, reflection lanes, item cues, and retest guidance.
Bug Report Generator Turn bug details into ticket-ready Markdown with repro steps, severity, evidence notes, triage fields, and a readiness checklist.
Build Artifact Storage Calculator Estimate retained CI artifact storage from build cadence, refs, retention, compression, caches, reserve allowance, and quota headroom.
Bulk Sender Requirements Checker Check bulk sender readiness against Gmail, Yahoo, and Outlook requirements using DNS, headers, spam rate, and unsubscribe evidence.
Business Days Calculator Count business days or shift deadlines with custom weekend patterns, pasted holidays, endpoint choices, and skipped-date ledgers.
CAA Validation Report Validate CAA policy for a hostname, follow CNAME and parent lookups, and review exact or wildcard issuance findings with DNS evidence.
CBT-I Sleep Diary Tracker Track CBT-I sleep diary nights with sleep efficiency, wake drift, check-in sliders, review-plan exports, trend charts, and saved browser rows.
CBT-I Sleep Window Calculator Plan a CBT-I sleep window from diary sleep and a fixed wake time, with bedtime shift checks, safety floors, and weekly review cues.
CD-RISC-10 Resilience Proxy Assessment Review resilience with a CD-RISC-10-style proxy, not an official score, using support-domain mapping and prior-score change tracking.
CDN Cache Hit Savings Calculator Estimate CDN cache-hit savings from traffic, requests, origin rates, hit-rate targets, CDN charges, payback, and break-even points.
CI Failure Log Analyzer Analyze a failed CI log, keep line-numbered failure clues, group stages and next actions, and mask secret-like snippets before sharing.
CI Runner Capacity Calculator Estimate CI runner capacity from daily jobs, runtimes, retries, and busy-hour bursts, with queue-wait checks and slot scenarios.
CIDR Allowlist Risk Checker Check CIDR allowlists for overly broad ranges, sensitive ports, stale exceptions, missing owners, and overlaps with scored evidence tables.
CODEOWNERS Coverage Analyzer Check CODEOWNERS coverage for changed files, flag missing, ownerless, or catch-all ownership gaps, and build a review-ready fix queue.
CORS Policy Risk Checker Check CORS response headers against origin, credential, cache, header exposure, and private-network rules with scored risk evidence.
CPS Test Measure clicks per second with timed target runs, goal sliders, bounce filtering, accuracy tracking, pace charts, local history, and exports.
CSP Header Generator Draft a Content Security Policy header with nonce, hash, allowlist, reporting, directive ledger, score, and rollout warnings before enforcement.
CSP Header Policy Checker Check a Content-Security-Policy header for unsafe script allowances, missing baseline directives, reporting gaps, and rollout-ready fixes.
CSS Gradient Generator Build CSS gradients with a draggable stop rail, live geometry preview, color-space options, syntax checks, and CSS/Tailwind exports.
CSS Minifier Minify CSS in your browser, compare saved bytes, and catch parser, browser-target, URL, comment, or source-map warnings before downloading.
CVC Word Practice Sheet Generator Create CVC word practice sheets from short-vowel lists, with family filters, rejected-word review, sound maps, and teacher answer keys.
Cache TTL Hit Rate Calculator Estimate cache hit rate from request reuse, TTL behavior, purge loss, and hit-versus-miss latency, then compare target TTL and freshness risk.
Cafe Drink Cost Calculator Price a cafe drink from ingredient lines, waste, packaging, labor, overhead, and margin targets with recommended prices and weekly profit.
Caffeine Content Calculator Estimate caffeine per serving, session, and day with drink presets, label-based entries, mg/kg context, guide checks, and active-caffeine timing.
Caffeine Cut-off Calculator Calculate your latest caffeine sip before bedtime using half-life, absorption, safe-dose, daily-limit, and residual chart checks for a planned drink.
Cake Servings Calculator Calculate cake servings for parties or tiered cakes, compare the reserve gap, and estimate batter and icing by pan or tier before ordering.
Calendar ICS Generator Create an ICS calendar file from event timing, timezone, reminder, and location details with escaped fields and compatibility checks.
Calories Burned Calculator Calculate calories burned from weight, activity MET, duration, and model choice, with active burn, target timing, comparison charts, and exports.
Camera Memory Card Capacity Calculator Plan camera memory cards from stills, video bitrate, reserve, dual-slot mode, and write-speed class with capacity and speed warnings.
Capacitor Calculator Calculate ideal parallel-plate capacitance from area, gap, dielectric, and voltage, with charge, energy, field stress, breakdown margin, and gap checks.
Capacity Upgrade Brief Report Build a capacity upgrade brief from utilization, growth, lead time, thresholds, and options, with runway charts and ranking notes.
Capital Gains Tax Calculator Estimate U.S. capital gains tax from sale proceeds, basis, income, losses, and gain type, with NIIT, rate-band, and sale scenario checks.
Car Loan Calculator Calculate a car loan payment from price, APR, term, trade equity, taxes, fees, and extra payments, with payoff schedules and cost warnings.
Car Tire Pressure Calculator Calculate cold front and rear tire pressures from placard or vehicle presets, load, axle share, tire width, and temperature drift with add-or-bleed steps.
Carb Loading Calculator Plan race-week carb loading from body weight, event length, and g/kg targets with daily grams, meal-block checks, a ramp chart, and warnings.
Carpet Calculator Estimate carpet to order from room size, roll width, cut direction, waste, pattern repeat, and costs with seam and offcut checks.
Case Converter Convert text into case formats for headings, identifiers, filenames, and slugs with line-by-line options, acronym handling, and exportable variants.
Cash Flow Runway Calculator Calculate cash runway from bank cash, receivables, outflows, growth, and reserve targets with scenario charts and funding-gap cues.
Ceiling Fan Size Calculator Size a ceiling fan by room area, ceiling height, airflow need, and location exposure, with checks for span, CFM, clearance, downrod, and run cost.
Cement Board Sheets Calculator Calculate cement board sheets from floor, wall, or shower measurements, with waste, spares, fasteners, tape, thinset, and waterproofing checks.
Center for Epidemiologic Studies Depression (CES-D-20) Screen past-week depressive symptoms with CES-D-20 scoring, a 16-point reference read, symptom clusters, high-intensity items, and local exports.
Ceph Storage Capacity Calculator Plan Ceph usable capacity from raw nodes, replication or erasure coding, nearfull reserve, failure domains, PG sizing, and spread checks.
Certificate Inventory Expiry Checker Check certificate inventory rows for urgent renewals, owner gaps, manual renewal risk, and public validity caps with queue-ready evidence.
Certificate Renewal Window Calculator Calculate a TLS certificate renewal window from validity, lead time, spread, daily capacity, retry reserve, and buffer days before expiry.
Certificate Signing Request (CSR) Decoder Decode a CSR locally, normalize PEM or DER input, verify SAN hostname coverage, key strength, signatures, fingerprints, JWK, and readiness notes.
Certificate Signing Request (CSR) Generator Generate a CSR and RSA private key in your browser, add SAN and subject fields, and export PEM plus OpenSSL guidance without sending keys.
Certificate Transparency Checker Check a PEM or DER certificate fingerprint in public CT data, then compare issuer rows, hostname coverage, revocation clues, and reporting hints.
Change Risk Assessment Reporter Assess IT change risk with rating sliders, readiness gates, residual-risk evidence, a driver chart, and report exports for review.
Changelog Generator Draft a changelog from release notes or commit subjects, map entries to Keep a Changelog sections, and review SemVer signals before copying.
Checklist and Log Generator Turn plain item lines into a checklist, to-do list, or reading log with a clean draft, row ledgers, review checks, and reusable exports for handoff.
Chess Clock Timer Run a two-player chess clock with presets, increment or delay timing, slider-tuned setup, move logs, balance charts, and shareable state.
Childcare Cost Calculator Estimate monthly and annual childcare cost by care type, children, extras, subsidies, income share, and a 2025 federal care-credit scenario.
Circle Time Routine Planner Plan a classroom circle time routine from age, theme, timing, and materials with age-fit warnings, block sequencing, checks, and a rhythm map.
Circuit Training Timer Build a circuit training timer from named stations, tune work and transition timing, run live cues, and export run sheets, charts, and logs.
Cisco ACL Generator Build Cisco IPv4 ACL commands from traffic-flow rows with platform syntax, sequence planning, order review, safety tables, and charts.
Cisco Interface Config Generator Build Cisco interface stanzas for routed, access, or trunk ports, with VLAN validation, command review, and copy-ready config output.
Citation Generator Create citation drafts for web, book, article, legal, dataset, media, and AI sources with style-specific entries and review notes.
Classroom Resource Pack Generator Build classroom lesson, study, exit ticket, lab, or book-report packs from grade, topic, objectives, timing, materials, and handoff notes.
Classroom Supply Budget Calculator Plan classroom supply purchases from enrollment, stock, pack sizes, tax, discounts, and funding caps with priority rows, charts, and exports.
Cleaning Quote Calculator Estimate a residential cleaning quote from room scope, condition, add-ons, travel, labor cost, and margin checks with client-ready notes.
Click Counter Count repeated events with a large Add target, chosen step size, subtract and reset corrections, session peak tracking, and activity export.
Cloud Egress Cost Calculator Estimate cloud egress spend from transfer volume, cache savings, tiered rates, request add-ons, peak months, and budget variance.
Cloud NAT Gateway Cost Calculator Estimate cloud NAT gateway spend from hours, processed data, endpoint offload, internet egress, cross-AZ traffic, IPv4 charges, and rate cards.
Cloud Tag Coverage Analyzer Audit cloud inventory tags, find resources missing required keys or allowed values, and export coverage, gap ledgers, charts, and cleanup queues.
Cloud-init Network Config Generator Build cloud-init version 2 network YAML for static VM interfaces with CIDR addresses, routes, DNS, MAC matching, and validation review.
Cloze Worksheet Generator Turn a reading passage into a cloze worksheet with nth-word, vocabulary, frequent-term, or bracket blanks plus word banks and teacher checks.
Coffee Bag Yield Calculator Plan how long a coffee bag will last from weight, dose or brew water, waste, price, and daily use, with serving cost and reorder timing.
Coffee Brew Planner Plan a coffee brew from drink size, ratio, bloom, and retention, with coffee dose, water timeline, strength checks, and dial-in notes.
Coffee Brew Suite Plan coffee recipes across pour-over, immersion, espresso, moka, and cold brew with dose math, schedules, strength bands, and dial-in notes.
Coffee Catering Quantity Calculator Plan coffee catering quantities from guest count, cup size, decaf split, reserve, vessels, condiments, station capacity, and cost per guest.
Coffee Cupping Score Calculator Score a coffee cupping sample from quality ratings, cup-count deductions, taints, and faults, then review bands, weak spots, charts, and exports.
Coffee Drink Calorie Calculator Estimate calories, sugar, macros, and caffeine for cafe-style coffee drinks, then compare milk, syrup, cream, and topping changes.
Coffee Extraction Yield Calculator Calculate coffee extraction yield from dose, beverage mass, and TDS or Brix, with target bands, bypass checks, and taste-led brew guidance.
Coffee Extraction and Strength Calculator Calculate coffee extraction yield and cup strength from dose, beverage mass, and TDS or Brix, with target bands and dial-in guidance.
Coffee Freshness Window Checker Check coffee freshness from roast date, brew method, grind state, storage, and opening habits with window dates, warnings, and a timeline.
Coffee Roast Yield Loss Calculator Calculate roast yield loss from green and roasted weights, then plan sellable output, QC pulls, package counts, and cost per roasted unit.
Coffee Strength Calculator Calculate coffee strength from dose, beverage mass, and TDS or Brix, then map extraction yield against brew targets and next-brew adjustments.
Coffee Water Recipe Calculator Plan coffee brewing water from measured GH, KH, TDS, and batch size, with RO dilution, mineral gram targets, charts, and audit cautions.
Coffee to Water Ratio Calculator Plan coffee-to-water ratios from a dose or target yield, with method windows, absorption, bloom water, batch scaling, and dial-in notes.
Cognitive Reflection Test (CRT-3) Assessment Take the classic three-item Cognitive Reflection Test in multiple-choice form, with outcome mix, lure checks, and a reflection index.
Cognitive Reflection Test (CRT-7) Assessment Take a seven-item CRT assessment in your browser, separate intuitive lures from other misses, and review section scores with rethink notes.
Coin Flipper Flip a fair, biased, or seeded coin, tune the heads chance, then inspect the latest result, expectation-gap charts, ledger, and exports.
Cold Brew Dilution Calculator Plan cold brew concentrate dilution with water or milk splits, ice melt allowance, service loss yield, and batch-ready serving counts.
College GPA Calculator Calculate college GPA from current courses and prior credits, with pass/fail and repeat-course checks, target buffers, audits, and grade-lift charts.
Color Palette Generator Build a color palette from one HEX color, compare harmony modes, check text contrast, and copy CSS tokens, swatches, SVG, or JSON.
Comma-Separated Values (CSV) Converter Convert CSV-like rows into previews, column profiles, and reusable exports with delimiter, quote, header, type, XML, and SQL controls.
Commute Cost Calculator Estimate driving, transit, and hybrid commute costs with fuel, parking, tolls, fares, time value, and annual scenario comparisons.
Companion Planting Checker Check or import a crop list for companion planting conflicts, useful pair notes, crop-family repeats, water or shade mismatches, crop-profile assumptions, and evidence confidence.
Compost Carbon-to-Nitrogen (C:N) Ratio Calculator Calculate a compost C:N ratio from browns, greens, weights, and moisture, then check balance, repair amounts, and mass charts for your pile.
Compound Interest Calculator Project savings growth with compound interest, recurring deposits, inflation-adjusted balances, fee drag, goal timing, and rate sensitivity.
Concrete Calculator Calculate concrete volume for slabs, footings, piers, or known takeoffs, then compare waste, bag counts, ready-mix rounding, and costs.
Conduit Fill Calculator Calculate conduit fill from raceway type, trade size, conductor groups, and fill rule, then review same-type sizing and pull warnings.
Config Drift Checker Compare intended and observed config lines, find changed, missing, extra, ignored, and priority drift, and build an audit-ready remediation view.
Container Image Pull Time Calculator Estimate container image pull time for rollouts, then compare cache, bandwidth, pull lanes, unpack work, retries, and optimization tradeoffs.
Container Security Scan Analyzer Analyze container scan output in your browser, normalize vulnerability findings, test release gates, and rank fixable packages for remediation.
Contractor Markup Margin Calculator Price or audit a contractor bid from direct cost, overhead, contingency, and profit assumptions, then compare margin, markup, and break-even risk.
Conventional Commit Messages Checker Check Conventional Commit headers or full messages for type, scope, breaking-change markers, release impact, and rule-specific fixes.
Cooked Yield Shrinkage Calculator Calculate cooked yield, shrinkage, true cooked cost, and next-batch purchase weight from AP, trim, cooked, and portion weights with yield-band warnings.
Copenhagen Burnout Inventory (CBI) Assessment Score the 19-item Copenhagen Burnout Inventory into three 0-100 burnout scales, compare PUMA anchors, and review high-burden answers.
Corrected Age (Preterm) Calculator Calculate corrected age for a preterm baby from due date or gestational age, with milestone windows, age-use notes, and transition guardrails.
Cost Per Hire Calculator Calculate cost per hire from recruiting spend and hires, then compare cost drivers, target variance, spend mix, and recruiting cost ratio.
Count and Color Sheet Generator Create count-and-color worksheets for numbers 0 to 20, with object themes, answer keys, color setup notes, and a count load map.
Countdown Timer Count down to a target date with timezone handling, buffer time, reminder milestones, a progress gauge, and local target checks.
Countertop Slab Yield Calculator Estimate how many countertop slabs to reserve, compare slab yield and utilization, and flag seam, cutout, and pattern risks before quoting.
Country Flags Quiz Practice country flags by world or regional pools with seeded quiz runs, score percentages, missed-answer review, and an accuracy chart.
Country Information Lookup Look up countries by name, ISO code, currency, calling code, capital, or region, then compare profile facts, maps, and source notes.
Country Take-Home Pay Comparator Compare two country salary offers after employee tax, payroll contributions, FX, and cost indexes, with source notes and cost-adjusted ranks.
Creatine Loading Calculator Calculate a creatine loading or maintenance schedule from body weight, serving split, label units, health context, and container supply.
Credit Card Calculator Estimate your credit card payoff timeline from balance, APR, payments, new charges, and target dates with interest totals, warnings, and schedules.
Credit Card Number Generator Generate sandbox-only payment card numbers with Luhn check digits, optional CVV or expiry fields, replay seeds, exports, and a prefix-mix chart.
Credit Card Number Validator Check payment-card test numbers locally with Luhn, issuer, length, and batch review, then inspect failing rows, rule traces, and charts.
Cricket Scoreboard Tracker Record a cricket innings by legal balls, extras, wickets, and chase target, then read run rate, required rate, projection, and scoring worm.
Cron Expression Parser Parse a Unix cron expression, expand each field, preview upcoming runs, and flag macro, timezone, day-rule, or dialect issues.
Cronbach Alpha Calculator Calculate Cronbach's alpha from survey response data, with item-total correlations, alpha-if-deleted checks, missing-data notes, and report wording.
Crontab Generator Build user or system crontab lines from presets, pasted entries, or manual fields, with validation, warnings, install notes, and exports.
Crop Rotation Planner Plan crop rotation by bed and plant family, spot same-family disease conflicts, project future seasons, and compare family balance with tables and heatmaps.
Cross Stitch Fabric Size Calculator Calculate cross stitch fabric cut size from stitch count, fabric count, stitch-over choice, margins, finishing allowance, and stock fit.
Crossword Puzzle Generator Build printable custom crosswords from answer-clue lists, tune grid fit and symmetry, review quality metrics, and export puzzles or answer keys.
Current Time Check the current browser time as local or UTC, freeze one snapshot, and copy Unix, ISO, UTC offset, and day-boundary evidence.
Cut Down, Annoyed, Guilty, Eye-opener (CAGE) Assessment Screen CAGE alcohol cues, compare 1+, 2+, and 3+ Yes cutoffs, and review Eye-opener patterns with practical follow-up guidance.
DANE TLSA Validation Report Check DANE TLSA records for mail and TLS services with route topology, DNSSEC AD evidence, digest comparison, readiness scoring, and exports.
DARVO Pattern Reflection Reflect on one confrontation for DARVO-style denial, attacks, and role reversal with 18 similarity ratings, tactic means, and cue notes.
DB Replica Lag Catch-up Calculator Estimate database replica catch-up time from byte backlog, write and apply rates, target windows, scenario changes, and retained-log risk.
DERS-18 Emotion Regulation Proxy Check Review recent emotion-regulation strain with an 18-item DERS-style proxy, six domain scores, reverse-keyed Awareness, and support cues.
DHCP Scope Calculator Calculate DHCP scope capacity from subnet, pool, exclusions, reservations, growth, and lease pressure with headroom warnings and snippets.
DKIM DNS Record Generator Build a DKIM TXT record from selector, domain, and public key input, with copy-ready DNS fields, split strings, key checks, and a route preview.
DKIM Validation Report Check a DKIM selector for a signing domain, review TXT tags, key size, testing flags, and resolver evidence in a readable report.
DMARC DNS Record Generator Build a DMARC DNS TXT record for a domain, stage policy rollout, normalize report URIs, and flag external-report authorization.
DMARC Validation Report Check a domain's DMARC record, review policy tags, report destinations, alignment, rollout status, and control scores from DNS.
DNS Cache Capacity Calculator Plan DNS resolver cache memory from QPS, hit rate, TTL, DNSSEC overhead, and headroom with budget fit and upstream-load curves.
DNS Configuration Report Audit a domain's DNS configuration with record inventory, posture notes, TTL tiers, and resolver timing charts from public DNS.
DNS Delegation Trace Analyzer Trace a hostname through DNS delegation, CNAME aliases, resolver differences, DNSSEC clues, and negative-cache retry timing from public resolver results.
DNS Denial Proof Report Build a DNS denial proof for NXDOMAIN or NODATA with resolver evidence, NSEC/NSEC3 checks, CD-bypass comparison, and retry timing.
DNS Glue & Delegation Check Check DNS glue and delegation for a domain, flag in-domain or sibling nameserver gaps, compare resolver views, and build a repair queue.
DNS Propagation Checker Check DNS propagation across public resolvers, compare expected answers or leading values, and review TTL, DNSSEC, ECS, and latency clues.
DNS Record Enumerator Enumerate public DNS records for a domain or IP, compare resolver evidence, and flag mail-auth, DNSSEC, PTR, CAA, and service-record gaps.
DNS Record Lookup Look up DNS records for a domain, host, or IP through Google or Cloudflare DoH, with TTL details, DNSSEC flags, charts, and raw responses.
DNS TTL Change Window Calculator Plan a DNS TTL cutover with safe drain timing, negative-cache checks, query-load guardrails, and exportable ledgers for migration runbooks.
DNS Wildcard Behavior Check Check DNS wildcard behavior with random leaf, deep, and boundary probes, then compare resolver splits, hit rates, and closest-encloser clues.
DNS Zone File Generator Generate a DNS zone file from SOA, NS, MX, and resource rows, with TTL policy, DNSSEC checks, lint-ready text, and record ledger.
DNS Zone File Validator Validate a BIND-style DNS zone file for SOA/NS shape, TTLs, CNAME conflicts, mail readiness, DNSSEC handoff, and normalized output.
DNSSEC Validator Validate a domain's DNSSEC evidence with DNSKEY, DS, RRSIG, denial-record checks, resolver AD comparison, and pass/fail exports.
DOCX Converter Convert a DOCX in your browser to HTML, Markdown, text, RTF, XML, CSV, EPUB, or JSON with package checks, structure charts, and image controls.
DORA Metrics Analyzer Analyze deployment CSV rows into DORA frequency, lead time, failure, recovery, and rework metrics with warnings, charts, and exports.
DR Runbook Report Create a disaster recovery runbook from RTO, RPO, owners, dependencies, failover steps, validation checks, and readiness gates.
Data Transfer Rate Converter Convert transfer rates across bit and byte units, model overhead, and check payload ETAs, window fit, link tiers, and SI or IEC labels.
Database Connection Pool Calculator Plan database connection pool size across app instances and workers, with headroom, deploy surge, full-pool, and per-holder cap checks.
Database Index Rollout Planner Plan a database index rollout with engine-specific SQL, lock and lag guardrails, build estimates, risk scoring, and rollback checks.
Database Migration Risk Checker Check SQL migration risk before release with scoring for destructive DDL, lock-heavy changes, large tables, validation, and backfill steps.
Database Storage Growth Calculator Plan database storage runway from current size, growth, indexes, logs, backups, replicas, headroom, autoscale caps, and monthly cost.
Date & Time Difference Calculator Calculate the time between two dates with timezone offsets, workday counts, business-hour overlap, checkpoint charts, and clean exports.
Debt Repayment Calculator Build a month-by-month debt payoff plan from balances, APRs, minimums, and extra cash, then compare payoff strategies and interest savings.
Decibel Calculator Calculate decibel levels from sound pressure, power, voltage, or custom ratios, then compare dB values, references, and ratio ladders.
Deck Materials Calculator Estimate deck boards, joists, beams, posts, footings, railing, stairs, fasteners, waste, and cost with cut plans and layout checks.
Decodable Reading Passage Generator Generate controlled decodable passage drafts by phonics focus, then review word coverage, teacher notes, questions, and printable exports.
Dehumidifier Size Calculator Size a dehumidifier for damp rooms with capacity, drainage, runtime, bucket burden, and energy-cost checks grounded in humidity inputs.
Dependency License Flags Checker Check dependency licenses against allowed, review, and denied policies, with SPDX expression handling, scope filtering, risk scoring, and review queues.
Dependency Update Risk Analyzer Triage dependency update rows by SemVer change, runtime scope, security, tests, and compatibility so risky upgrades enter owner review.
Depression Anxiety Stress Scales (DASS-21) Assessment Complete a DASS-21 past-week symptom screen with doubled subscale bands, item pressure cues, cutoff context, and follow-up notes.
Depression Anxiety Stress Scales (DASS-42) Assessment Score the full DASS-42 questionnaire into depression, anxiety, and stress bands, with in-browser subscale charts, item review, and privacy cautions.
Depth of Field Calculator Calculate depth of field from lens, aperture, distance, and sharpness target, then compare focus limits, hyperfocal distance, blur cues, and framing.
Dew Point Calculator Calculate dew point from temperature and humidity, compare a surface for condensation risk, and review vapor pressure, comfort, and curve data.
Diaper Usage Calculator Estimate diapers to buy, monthly cost, stock runway, reorder timing, and size-fit warnings from daily changes, pack price, stock, and buffers.
Dice Roller Roll tabletop dice notation with pipped controls, advantage, rerolls, exploding dice, seeded runs, probability charts, tables, and logs.
Diceware Passphrase Generator Generate a Diceware passphrase locally from browser rolls or manual dice keys, then review entropy, roll evidence, and policy fit before copying.
Dimensional Weight Shipping Calculator Calculate dimensional shipping weight from packed box measurements, carrier divisors, rounding rules, actual weight, and packaging scenarios.
Discount Calculator Calculate the real checkout total after markdowns, coupons, shipping, tax, and quantity, with budget-gap warnings and offer comparisons.
DoH Query Packet Crafter Craft a DNS-over-HTTPS wire query, preview its packet path, tune EDNS and DNSSEC flags, export replay data, and decode live replies.
Docker Compose Generator Build Compose YAML for one service with image or build inputs, .env secret references, healthchecks, network plans, and review findings.
Docker Compose Healthchecks Checker Check Docker Compose healthchecks against service roles and depends_on gates, then find missing probes, weak timing, and restart-policy gaps.
Dockerfile Generator Generate a Dockerfile and .dockerignore for Node.js, Python, Go, or Java services with cache mounts, non-root runtime, and review ledgers.
Dockerfile Security Basics Checker Check a Dockerfile for risky defaults before build time, with weighted findings for base images, users, secrets, package hygiene, and runtime surface.
Dog Grooming Quote Calculator Build a dog grooming quote from service type, dog size, coat condition, handling needs, add-ons, margin checks, and customer-ready text.
Drip Irrigation Zone Flow Calculator Calculate drip irrigation zone flow from layout, emitters, or measured flow, then check supply margin, lateral load, and split plans.
Drop Ceiling Grid Materials Calculator Calculate drop ceiling tiles, grid pieces, hanger wire, fasteners, cartons, waste, and rough material cost with layout checks.
Dryer Vent Length Calculator Calculate dryer vent equivalent length from straight duct, elbows, flex, and hood allowances, then check route limits and cleaning warnings.
Drywall Materials Calculator Estimate drywall sheets, order area, joint compound, tape, screws, corner bead, waste, weight, and material cost from dimensions or a takeoff.
Duplicate Line Remover Clean repeated lines from pasted text or a local TXT/CSV list, choose case and spacing rules, and review kept rows with metrics and a duplicate ledger.
Dysfunctional Beliefs and Attitudes About Sleep (DBAS-16) Assessment Assess DBAS-16 sleep beliefs, compare the 0 to 10 mean with the 3.8 reference, and rank the strongest beliefs to revisit next.
ECMP Path Capacity Calculator Calculate ECMP usable capacity from healthy paths, link rate, demand, hash efficiency, headroom, failure runway, and largest-flow risk.
ECR-R-style Attachment Profile Proxy Map romantic attachment anxiety and avoidance with a 36-item ECR-R-style proxy, midpoint chart, item cues, and browser-side scoring.
EDNS Client Subnet (ECS) Tester Test EDNS Client Subnet behavior for a DNS name by comparing hinted and control lookups, echoed scope, TTL drift, and resolver evidence.
EDNS Options Inspector Inspect EDNS behavior for a domain through public DoH resolvers, comparing OPT records, DNSSEC flags, ECS, padding, packet sections, and replay commands.
EMOM Workout Timer Build and run an EMOM workout timer with slider-tuned minutes, movement rows, rest-buffer checks, finish logging, charts, and exports.
ENV Converter Convert .env content into YAML, JSON, runtime env, INI, and properties outputs with line tracing, expansion checks, and secret review.
EPQ-R Style PEN Personality Proxy Assessment Take a 28-item EPQ-R-style personality proxy to compare P, E, N, and L scores with keyed-answer review, cautions, and chart exports.
EPW-Style Daytime Sleepiness Proxy Assess usual daytime sleepiness with eight EPW-style ratings, then review the 0-24 score, reference zone, safety cue, and context map.
EQ-5D-5L Health Status Survey Record today's EQ-5D-5L health state, compare EQ VAS with US 2019 and England 2018 utilities, and spot the dimensions driving burden.
EV Charger Circuit Load Calculator Calculate EV charger circuit load from charger current, breaker size, panel headroom, connection limits, and voltage-drop conductor checks.
EV Range Calculator Calculate EV range from battery capacity, charge reserve, consumption, driving profile, trip distance, and sensitivity checks before planning a stop.
Early Math Worksheet Generator Generate early math worksheet drafts for counting, ten frames, missing numbers, patterns, and fractions with answer keys and skill-mix review.
Edinburgh Postnatal Depression Scale (EPDS) Assessment Score EPDS answers for the last 7 days, review 0-9, 10-12, and 13+ follow-up cues, and keep Question 10 safety signals visible.
Effective Interest Rate Calculator Compare nominal interest quotes on an effective annual basis, with compounding lift, equivalent quote, real yield, and holding-period return.
Effective Tax Rate Calculator Calculate effective tax rate from bracket presets or manual tax totals, compare average and marginal rates, and separate income tax from payroll or other tax.
Electric Vehicle (EV) Charging Time Calculator Estimate EV charging time from battery size, state of charge, charger limits, taper, derates, range, cost, and departure timing.
Electrical Box Fill Calculator Calculate NEC-style electrical box fill from wires, grounds, devices, clamps, support fittings, and terminal blocks with clear margin warnings.
Electrical Panel Load Calculator Estimate residential service demand from floor area, appliances, HVAC, EV charging, and added loads, then compare amps with rating headroom.
Email Header Analyzer Check raw email headers in your browser for relay delays, SPF/DKIM/DMARC alignment, ARC context, sender mismatches, and spoof-risk clues.
Email Signature Generator Create a compact email signature with HTML, plain text, preview, contact-link checks, width limits, color validation, and copy-ready output.
Employee Total Cost Calculator Calculate loaded employee cost from salary or wages, burden, benefits, equipment, software, and overhead with monthly, hourly, and cost-mix views.
Employee Turnover Rate Calculator Calculate employee turnover for a reporting period, compare exit categories, and check headcount base, annualized rate, and reconciliation flags.
Endurance Fuel Planner Plan run or ride fueling from duration, carb targets, sweat rate, sodium profile, bottle size, interval reminders, and refill timing.
Environment Variable Inventory Checker Compare required environment variables with a pasted inventory, flag missing, blank, placeholder, duplicate, and secret-like entries with redacted output.
Ephemeral Port Exhaustion Calculator Estimate SNAT and ephemeral-port exhaustion risk from connection churn, hot-destination share, hold time, source addresses, and NAT caps.
Epoch Time Converter Convert epoch seconds, milliseconds, or local datetime values into UTC, selected-zone, date-part, timeline, and year-progress outputs.
Epworth Sleepiness Scale (ESS) Assessment Assess usual daytime dozing with the ESS, then review the 0-24 band, driving caution, top situations, browser charts, and shareable exports.
Error Budget Burn Rate Calculator Calculate SLO burn rate from error ratio and remaining budget, then review runway, alert thresholds, and mitigation targets for incidents.
Error Budget Calculator Calculate error budget use from SLO target, elapsed traffic, bad events, burn-rate gates, runway, and projected exhaustion for release review.
Espresso Shot Planner Plan an espresso recipe from dose, ratio, yield, time, temperature, and pressure, then log pulls against flow and tolerance bands.
Ethernet Frame Efficiency Calculator Calculate Ethernet payload efficiency from frame size, VLAN tags, and wire-time spacing, with goodput, overhead, and target-rate checks.
Event Portable Toilet Calculator Plan portable toilets for an event with attendee-hour estimates, ADA unit coverage, handwashing needs, service visits, and rental budget checks.
Event Schedule Generator Turn session rows or CSV files into a timed event run sheet with a cue rail, handoff checks, timeline charting, and calendar export.
Event Seating Capacity Calculator Calculate event seating capacity from room size, fixed zones, aisle reserve, layout density, occupancy limits, staff count, and guest target.
Exchangeable Image File Format (EXIF) Viewer & Editor Edit image EXIF metadata in your browser, check GPS and serial privacy risks, and export a cleaned JPEG, PNG, or WebP sharing copy.
Expense Policy Checker Check expense rows against receipt thresholds, category caps, mileage math, duplicates, and blocked categories with review-ready flags.
Extensible Markup Language (XML) Converter Convert XML into tables, JSON, JSON Lines, SQL, and formatted XML with record-path selection, schema clues, and local parsing.
Extension Cord Voltage Drop Calculator Calculate extension cord voltage drop, load-end voltage, heat loss, and AWG length limits with rating checks for running loads.
Faraid Calculator Calculate Faraid estate shares after deductions and capped wasiat, with heir allocations, residue handling, profile comparisons, and review warnings.
Fat-Free Mass Index (FFMI) Calculator Calculate FFMI from body weight, height, and body-fat or lean-mass inputs, then compare raw, normalized, benchmark, sensitivity, and goal results.
Favicon Generator Generate favicon PNGs and favicon.ico from one source image in your browser, with app icon profiles, HTML links, manifest JSON, and readiness checks.
Feature Flag Cleanup Checker Review feature flag inventories for stale, expired, ownerless, dependency-blocked, or code-referenced flags with a cleanup queue.
Fence Materials Calculator Estimate fence posts, infill, rails, concrete, gate hardware, waste, and material cost from a measured run with spacing impact checks.
Fertilizer Solution Mix Calculator Calculate a fertilizer solution recipe from N-P-K ppm targets, reservoir volume, and soluble fertilizer grades with fit and stock-density checks.
Fiber Link Budget Calculator Calculate a fiber link budget from optic power, route loss, joins, splices, passive devices, and reserve to check margin, overload, and reach.
Field Service Trip Charge Calculator Build a field-service trip charge from route distance, drive time, loaded labor, vehicle cost, minimums, premiums, and repair-credit rules.
Field of View Calculator Plan camera framing from sensor size, focal length, and distance, then compare angle of view, scene coverage, target fit, and lens sweep charts.
File Encryptor & Decryptor Encrypt or decrypt one local file with AES-GCM or compatibility modes, KDF controls, integrity checks, and recovery metadata review.
File Hash Generator Hash one local file in the browser, compare MD5, SHA, SHA-3, or RIPEMD-160 digests, and keep session history with salt and case context.
File Transfer Time Calculator Estimate file transfer time from size and bandwidth, then test overhead, compression, latency, packet loss, TCP window, and deadline limits.
File and Disk Size Converter Convert file and disk sizes across decimal and IEC units, then compare usable capacity, allocation slack, and storage-fit tiers with exports and a fit chart.
File to PDF Converter Turn images, Markdown, HTML, and text into browser PDF handoffs while auditing Office files with review PDFs, route warnings, and exports.
Filebeat Grok Pattern Generator Build a Filebeat Grok pattern from a sample log line, then review match groups, ECS field names, pipeline JSON, and sample coverage.
Final Grade Calculator Calculate the final exam score needed for a target course grade, with remaining coursework, curves, buffers, ceilings, and runway checkpoints.
Finland AIS Vessel Tracker Look up Finnish AIS vessels by identifier, name, type, or radius and review identity, position, speed bands, signal checks, and map links.
Fireplace Screensaver Simulator Shape a fireplace screensaver with flame, embers, smoke, wind, glow, fullscreen preview, and hearth metrics for smoother ambient loops.
Firewall Deny Log Analyzer Analyze firewall deny logs in your browser, group blocked source-service paths, and prioritize watched ports with CIDR direction checks.
Firewall Rule Matrix Generator Turn firewall flow rows into a review matrix with scope scoring, audit findings, object planning, platform handoff notes, and heatmap exports.
Firewall Rule Review Report Review firewall rule inventories for stale, broad, privileged, expired, or ownerless access and turn the queue into an evidence report.
Firewall Shadow Rule Checker Find shadowed firewall rules in ordered ACL exports, compare full and partial overlaps, and prioritize remediation by action impact.
Five Number Summary Calculator Calculate a five-number summary from pasted data, compare quartile methods, flag IQR outliers, and review the spread with a box plot.
Fixed Deposit Calculator Calculate fixed deposit maturity value from principal, APR/APY, term, tax, inflation, payout choice, credit schedule, and coverage limit.
Flagstone Patio Materials Calculator Estimate flagstone patio materials by area, stone coverage, joints, base, bedding, edging, waste, rounding, and material cost.
Flashcard Sheet Generator Make printable flashcard sheets from term-answer pairs, with duplex print checks, seeded shuffles, cut guides, parse logs, and exports.
Flight Delay Tracker Check a flight number and departure date against sample or provider data, then compare status, delay minutes, matches, and timeline views.
Flight Emissions Tracker Estimate flight CO2e from route legs or distances, with cabin, traveler, SAF, radiative forcing, offset cost, and leg-by-leg audit details.
Flight Tracker Track a live aircraft by callsign or ICAO hex, narrow OpenSky scans by region, and review freshness, map position, match audit, and traffic chart.
Flooring Calculator Estimate flooring boxes from measured area, carton coverage, waste, spare stock, and price with full-box rounding and buying checks.
Focus Stacking Step Calculator Calculate macro focus-stacking rail steps with frame counts, coverage margins, aperture tradeoffs, and warnings for coarse rails or diffraction.
Forbearance 8 Assessment Reflect on eight forbearance items, see an 8-48 reserve band, and compare fault tolerance with viewpoint room for ordinary conflict.
Fraction Practice Generator Generate fraction practice worksheets with repeatable seeds, answer keys, worked steps, denominator safeguards, and print-ready layouts.
Free Fall Calculator Calculate free-fall time and impact speed from height, initial velocity, gravity, and optional mass with trajectory charts and caution checks.
Free Space Path-loss & RSSI Calculator Calculate RF free-space path loss and predicted RSSI, then check fade reserve, Fresnel clearance, SNR, and range or band tradeoffs.
Freelance Hourly Rate Calculator Calculate a freelance hourly rate from take-home goals, expenses, tax reserves, fees, unpaid time, utilization, and quote buffers.
Freelance Tax Set-Aside Calculator Reserve tax from freelance payments with 2026 U.S. brackets, self-employment tax, safe-harbor checks, state-rate input, and payment-by-payment targets.
Freight Class Density Calculator Calculate LTL freight density from pallet or crate measurements, estimate density class, and flag boundary, packaging, and quote risks.
French Drain Materials Calculator Plan French drain materials from trench dimensions, with gravel volume, pipe and fabric takeoffs, slope checks, and material-cost estimates.
Friel Heart Rate Zone Calculator Calculate Friel heart rate zones from LTHR or a field-test average, with current-HR lookup, session minutes, charts, and exportable zone tables.
Fuel Efficiency Converter Convert MPG (US), L/100 km, and km/L readings with direction cues, unusual-value warnings, rounded tables, and a sensitivity chart.
GHS Hazard Pictograms Quiz Practice GHS hazard pictograms by matching each red-diamond symbol to its meaning, then review your score, missed answers, and accuracy split.
GPA Calculator Calculate GPA from course credits and grades, audit repeat or pass-fail rows, and see target gaps, grade lifts, and transcript impact charts.
GST Calculator Calculate GST from taxable, inclusive, or tax-only amounts with quantity, rounding, split tax heads, rate checks, and receipt exports.
Garden Bed Planner Plan raised beds or container plantings from crop spacing, germination, packet count, bed size, planting dates, soil mix, and harvest windows.
Garden Calendar Planner Plan a frost-aware garden calendar from crop, season, climate zone, frost dates, succession waves, harvest windows, and workload cues.
Gas Mileage Calculator Calculate gas mileage from a trip or fill-up, compare MPG with L/100 km, estimate fuel cost, tank range, and future fuel needs.
General Self-Efficacy Assessment Assess general self-efficacy with the 10-item GSE, then review your 10-40 score, mean, reference anchor, route map, and answer pattern.
Generalized Anxiety Disorder (GAD-7) Assessment Score the seven GAD-7 anxiety items, see the 0 to 21 severity band, 10-point screening cue, function impact, and shareable result.
Generator Watts Calculator Estimate generator running and starting watt ratings from load rows, surge assumptions, derating, reserve margin, and safety warnings.
Geriatric Depression Scale (GDS-15) Assessment Screen older-adult mood with 15 GDS yes-or-no items, keyed scoring, explicit 5 and 10 cutoffs, item patterns, and exportable reports.
Git Branch Staleness Analyzer Audit Git branch inventories locally with age, merge, protection, ahead/behind, and gone-upstream signals before deleting stale branches.
Git Diff Risk Analyzer Score Git diffstat or numstat before review, highlighting churn, risky paths, deletion pressure, generated files, and binary changes.
GitHub Actions Cache Config Generator Build GitHub Actions cache YAML from your ecosystem, lockfiles, paths, restore keys, and runner notes with review checks before copying.
GitHub Actions Matrix Generator Build GitHub Actions matrix workflow YAML from runtimes, runners, triggers, caching, and include/exclude rows with checks and ledgers.
GlusterFS Volume Capacity Calculator Estimate GlusterFS usable capacity across distributed, replica, arbiter, and dispersed layouts with set maps and recovery headroom checks.
Golden Hour Calculator Plan golden hour and blue hour shoots by date and location, with sunrise and sunset windows, sun direction markers, and setup cues.
Good VO2 Max by Age Lookup Find the good VO2 max range for an adult age and reference sex, classify a measured value, and see the next-tier gap with source notes.
Grade Calculator Calculate a current course grade from points, percentages, or letter marks, then test weights, dropped work, late penalties, and target runway warnings.
GraphQL Formatter Format pasted, dropped, or loaded GraphQL operations and schema SDL locally, compare readable and compact outputs, and review bracket, role, operation naming, payload, definition, and warning evidence.
Gravel Calculator Calculate gravel volume and weight for driveways, paths, beds, and drainage jobs with density, allowance, supplier rounding, cost, and bag checks.
Grind Size Chooser Choose a coffee grind size for espresso, pour-over, press, or cold brew using brew time, taste feedback, micron bands, and dial guidance.
Grit-S Assessment Review an eight-item Grit-S profile for a chosen long-term goal, with consistency and perseverance means, item cues, and reference gaps.
Growing Degree Days Calculator Calculate growing degree days from pasted weather rows, biofix dates, base and cap settings, with stage outlooks and heat pace charts.
Growth Chart Report Generator Turn pediatric visit rows into a growth report with percentile trends, velocity guardrails, screening flags, charts, and follow-up cues.
Growth Percentile Trend Calculator Calculate a child's height, weight, or BMI percentile trend across visits with WHO/CDC references, band crossings, charts, and follow-up cues.
Growth Screening Flag Checker Screen pediatric growth visits for percentile drift, height velocity, corrected-age, adiposity, and family-height flags with triage guidance.
Growth Velocity Calculator Calculate child growth velocity from height or weight visit rows, with expected bands, percentile drift, spacing confidence, and follow-up cues.
Growth Z-Score Calculator Calculate a child's growth z-score from age, sex, height, weight, or BMI, with WHO/CDC references, percentile gates, and preterm-age correction.
Guided Reading Groups Planner Plan guided reading groups from roster levels, instructional needs, texts, and weekly slots, with rotation schedules and needs checks.
Gutter Cleaning Quote Calculator Build a gutter cleaning quote from gutter length, access, debris, downspouts, guards, labor cost, margin floor, and customer-ready notes.
Gutter Downspout Calculator Plan gutter downspouts from roof area, rainfall, gutter and leader capacity, spacing, placement rows, material takeoff, and storm checks.
Gzip Compression Checker Check HTTP compression from pasted response headers or a live public URL, with gzip/Brotli evidence, Vary checks, size savings, and request recipes.
Gzip Text Decompressor Decompress gzip, zlib, or raw deflate payloads locally from Base64, hex, escaped bytes, or a local file with text decoding and byte evidence.
HA Failover Budget Calculator Calculate an HA failover budget from probe cadence, promotion, routing, client delay, and validation, with RTO fit and tuning scenarios.
HA Pair Role Consistency Checker Check HA pair inventories for active and standby drift, stale sync, heartbeat gaps, priority mismatches, and VIP conflicts before failover.
HAProxy Backend Config Generator Build an HAProxy backend block from server rows, balance mode, health checks, TLS choices, and review warnings before copy or download.
HCL Converter Convert HCL or Terraform config into YAML, JSON, INI, env, and properties views with block counts, path ledgers, and schema checks.
HEXACO Personality Inventory (HEXACO-60) Assessment Score a HEXACO-60 self-report profile, compare optional college-sample means, and inspect facet and item evidence without uploads.
HIIT Workout Timer Build a HIIT workout timer from exercise lines, paired work-rest sliders, rounds, warm-up, cooldown, local cues, logs, and load charts.
HMAC Generator Generate HMAC signatures locally from text or local text files with SHA and RIPEMD options, byte encodings, expected-signature checks, prefixes, and exports.
HPI-Style Bright-Side Personality Proxy Assessment Review HPI-style workstyle traits with a 70-item IPIP proxy that shows raw scale means, derived signals, and answer evidence.
HTML Boilerplate Generator Generate an HTML starter document with title, language, metadata, asset paths, head checks, and copy-ready markup for a new page.
HTML Entity Lookup Look up HTML entities, code points, and symbols, then choose named, numeric, attribute-safe, CSS, JavaScript, or URL-ready output.
HTML Escape and Unescape Tool Convert HTML text to safe character references or decode entities back to readable text, with strict handling, transform logs, and copy-safety warnings.
HTML Escaper Escape text or markup for HTML text nodes, attributes, XML, or strict handoff, with entity preservation checks and treatment ledgers.
HTML Minifier Minify HTML in your browser, compare byte savings, and review comment, raw-text, spacing, and attribute checks before copying output.
HTML Tag Stripper Strip HTML into plain text locally with content-scope, hidden-content, whitespace, link, image, entity, and cleanup controls plus ledgers and exports.
HTML Unescaper Decode escaped HTML text or small local files in your browser, compare strict and tolerant entity handling, and review unresolved or script-shaped output.
HTML to JSX Converter Convert pasted, dropped, or loaded HTML or SVG into JSX locally with React attribute names, style objects, handler review notes, migration ledgers, source cleanup controls, and exportable artifacts.
HTML to Markdown Converter Convert pasted or loaded HTML into Markdown locally with Turndown-backed profiles, table/link handling, merged-cell safeguards, review warnings, element maps, and exportable ledgers.
HTTP Access Latency Log Analyzer Analyze NGINX, Apache, or ALB access logs in your browser, compare endpoint P95/P99 and 5xx signals, and export SLA findings.
HTTP Security Headers Checker Review pasted HTTP response headers for HSTS, CSP, cookies, CORS, cache, and disclosure risks with a scored remediation queue.
HVAC Sizing Calculator Estimate HVAC cooling capacity for a room or zone from area, height, climate, insulation, sun exposure, occupants, equipment heat, and size-fit bands.
Handyman Quote Calculator Estimate a handyman job with labor floors, marked-up materials, trip fees, tax, risk buffer, deposit notes, and margin checks before sending.
Hash Type Identifier Identify likely hash formats from pasted values or local files, with confidence buckets, cleanup hints, ambiguous overlaps, and verifier next steps.
Headcount and FTE Calculator Calculate headcount and FTE from employee, role, or department rows, with contractor exclusions, hour checks, and group rollup charts.
Heart Rate (HR) Zones Calculator Calculate heart-rate zones from age, known max HR, or heart-rate reserve, with formula comparisons, current-pulse checks, and session targets.
Heart Rate Variability (HRV) Resonance Finder Estimate an HRV resonance breathing rate, view its breath-cycle map, and export metrics, trial steps, guidance, response curve, and JSON.
Heat Pump Savings Calculator Estimate heat pump savings from real fuel use, COP or HSPF2, utility rates, incentives, payback timing, and break-even costs.
Heatsink Thermal Resistance Calculator Calculate the heat-sink thermal resistance budget from device power, junction limit, interface loss, ambient heat, and airflow context.
Height-for-Age Percentile Calculator Calculate a child's height-for-age percentile from age, sex, and length or stature, with z-score, WHO/CDC comparison, and screen margins.
Helm Values Schema Validator Validate values.yaml against values.schema.json, with Helm-style failure details, schema coverage, hygiene warnings, and a CI command snippet.
High School GPA Calculator Calculate high school GPA from transcript rows, compare weighted and unweighted results, audit course treatment, and estimate target gaps.
Home EV Charger Install Cost Calculator Estimate a home EV charger install budget from circuit size, wire run, panel scope, labor, permits, tax, rebates, and quote checks.
Home Office Deduction Calculator Compare U.S. home office deduction methods with eligibility checks, square-foot limits, actual expenses, income caps, and tax-effect estimates.
Hostname Naming Standard Checker Check hostnames, URLs, and CSV rows against DNS syntax, regex naming rules, lowercase policy, suffix checks, and duplicate findings.
House Wrap Rolls Calculator Calculate house wrap rolls from wall area, roll size, waste allowance, seams, openings, tape, fasteners, and optional material costs.
Hreflang Tag Generator Generate hreflang clusters from locale URL rows, with HTML head tags, sitemap XML, HTTP headers, and audits for self-reference and x-default.
Hypertext Transfer Protocol (HTTP) Header Checker Check a live HTTP URL for response headers, redirect drift, cache rules, cookie flags, CORS exposure, and prioritized hardening findings.
Hypertext Transfer Protocol (HTTP) Redirect Checker Trace an HTTP redirect chain hop by hop, compare final status, HSTS, host handoffs, latency, loops, and copy a replayable cURL command.
IAM Policy Permissions Analyzer Analyze IAM policy JSON for wildcard actions, broad resources, sensitive services, and least-privilege findings before approval.
IAM Policy Wildcards Checker Review AWS IAM policy JSON for wildcard Action, Resource, Principal, NotAction, and NotResource risks with severity-ranked remediation rows.
INI Converter Convert INI or CFG settings into JSON, YAML, env, properties, and normalized INI with duplicate-key notes, path views, and schema checks.
IOPS / MBps / GB-per-day Converter Convert IOPS, throughput, and daily volume from block size and active hours, then chart ceiling headroom, block pressure, and cloud disk fit.
IP Address to Decimal Converter Convert an IPv4 address or 32-bit integer into decimal, numeric notations, mapped IPv6 forms, range labels, and octet contribution rows.
IP Overlap Checker Check IPv4 inventories for overlapping CIDR blocks, host-bit fixes, duplicate address counts, coverage blocks, and change-review actions.
IP3 and SFDR Calculator Calculate IP3, IM3 products, MDS, and SFDR from RF gain, bandwidth, noise basis, and two-tone levels with margin checks and charts.
IPIP Personality Inventory (IPIP-NEO-120) Assessment Complete an IPIP-NEO-120 Big Five assessment with raw domain totals, 30 facet scores, chart exports, and keyed-item evidence.
IPIP Personality Inventory (IPIP-NEO-60) Assessment Build a 60-item IPIP-NEO-60 Big Five profile with domain means, facet clues, profile charts, and browser-only answer review exports.
IPsec Overhead Calculator Plan IPsec tunnel MTU and TCP MSS from ESP profile, NAT-T, path extras, padding, and reserves, with byte ledgers and profile charts.
IPv4 Allocation Planner Plan IPv4 subnets from a parent CIDR and host demands with sliders, aligned ranges, fit audits, address-space charts, and shareable state.
IPv4 Renumbering Planner Plan IPv4 renumbering waves from host mappings, old and new prefixes, DNS and DHCP timing, with runbook, readiness, rollback, and JSON outputs.
IPv4 Subnet Allocation Planner Allocate IPv4 subnets from a parent CIDR and host demand list, with reserve headroom, gateway suggestions, fit checks, and charts.
IPv4 Supernet Calculator Summarize IPv4 CIDR lists in your browser into a cover route or exact aggregate set, with normalization, overlap cleanup, and gap checks.
IPv6 Address Compressor / Expander Normalize one IPv6 address into compressed, expanded, binary, reverse-DNS, hextet, prefix, zone, and dotted-tail views with warnings.
IPv6 Address and Subnet Calculator Plan an IPv6 subnet from an address or CIDR, with canonical ranges, child-prefix counts, reverse-DNS alignment, and EUI-64 samples.
IPv6 Prefix Plan Calculator Plan IPv6 site and LAN prefixes from a parent CIDR with fit checks, /64 warnings, bit-budget charts, and copyable ledger outputs.
Iced Coffee Flash Brew Calculator Calculate a flash-brew iced coffee recipe with coffee dose, hot-water split, brew ice, pour timing, melt checks, and sensitivity charts.
Ideal Weight Calculator Estimate adult ideal weight from four classic formulas, compare the BMI healthy-weight corridor, and check current-weight gaps in kg or lb.
Image Background Remover Remove a simple image background in your browser, tune color sensitivity and feathering, then download a transparent PNG with mask diagnostics.
Image Compressor Compress an image in your browser, preview size and quality changes, and check resize, target-size, and hidden-data settings before download.
Image Cropper Crop images locally with exact ratios, source-pixel rectangles, output-size checks, live previews, and PNG, JPEG, or WebP downloads.
Image Format Converter Convert one image locally, resize or flatten transparency, compare byte-size changes, and catch format-support warnings before download.
Image Metadata Stripper Strip image metadata in your browser with EXIF, XMP, IPTC, GPS-hint checks, clean JPEG/PNG/WebP output, and a cleanup receipt.
Image Resizer Resize one image in your browser with fit, contain, cover, quality, size-cap, preview, and no-upscale checks before downloading.
Image to Base64 Encoder Turn one image into Base64, Data URIs, embed snippets, and a payload comparison chart with local resizing and delivery-fit warnings.
Impedance Calculator Calculate series RLC impedance from R, reactance, or L/C/f values with phase angle, power factor, RMS current, and phasor outputs.
Incident Action Items Tracker Turn incident action rows into a follow-up ledger with owner rollups, due-date warnings, blocker flags, missing-field checks, and exportable summaries.
Incident MTTx Metrics Calculator Calculate incident MTTD, MTTA, MTTC, and MTTR from lifecycle CSV rows, then review target breaches, P85 tails, warnings, and stage charts.
Incident Timeline Report Build a sorted incident timeline from CSV or notes, flag phase gaps and long quiet periods, and produce a review-ready handoff report.
Income Tax Calculator Estimate income tax from monthly or annual income with country presets, custom brackets, deductions, credits, scenario deltas, and guardrails.
Insomnia Severity Index Assessment Score recent insomnia burden with the seven-item ISI, published severity bands, symptom drivers, chart views, and follow-up cues.
Insulation Calculator Plan an insulation order from measured area and R-value, with package rounding, target gaps, installed depth, cost, and heat-loss comparison.
Interface Description Standard Checker Check interface descriptions from config, CSV, or show-output rows for missing terms, weak evidence, duplicate text, length limits, and remediation rows.
Intermittent Fasting Planner Plan daily intermittent fasting windows from first meal time, preset or OMAD/custom split, safety ceiling, weekend shifts, and live schedule cues.
Internet Protocol (IP) Geolocation Finder Check a public IP address, domain, or URL for approximate location, timezone, ASN, reverse DNS, map coordinates, and follow-up evidence.
Internet Protocol version 4 (IPv4) Subnet Calculator Calculate IPv4 subnet ranges, host capacity, wildcard masks, and VLSM split plans with special-use flags, charts, and in-browser math.
Internet Protocol version 4 (IPv4) Subnet Split Calculator Split an IPv4 parent block into equal CIDR child subnets, then compare host capacity, gateway slots, special-use ranges, and forecast charts.
Interpersonal Reactivity Index Assessment Score the 28-item IRI to compare four empathy facets, review reverse-keyed item contributions, and spot distress or response-style cautions.
Interview Questions Generator Build a structured interview guide from a role brief, focus areas, timing, question mix, scoring anchors, risk signals, and exports.
Inventory Carrying Cost Calculator Calculate inventory carrying cost from average stock value and component rates, then see margin drag, turnover, benchmark gaps, and stock-reduction savings.
Inventory Reorder Point Calculator Calculate when to reorder a SKU from demand, lead time, safety stock, inventory position, supplier rounding, and stress checks.
Invoice Due Date Calculator Calculate an invoice due date from Net, EOM, business-day, weekend, and holiday rules, then review skipped dates and overdue status.
Invoice Late Fee Calculator Calculate an invoice late fee from due dates, grace days, rates, caps, credits, and rounding, with clause math and AR note output.
Irrigation Runtime Calculator Calculate irrigation runtimes from ETo, target depth, drip flow, soil reserve, efficiency, and cycle-soak checks for a controller-ready schedule.
JSON Converter Turn messy JSON or JSON Lines into branch-aware tables, handoff exports, path audits, and precision checks that stay in your browser.
JSON Diff Comparator Compare two JSON payloads locally by structure with explicit array matching, ignored paths, path-level changes, patch-style evidence, chart counts, and exportable ledgers.
JSON Formatter Format JSON locally into readable, compact, line-stream, and deterministic outputs with visible dialect controls, node paths, size charts, and duplicate-key checks.
JSON Repair Tool Repair messy JSON-like text in your browser, turn comments, single quotes, loose literals, and wrappers into strict JSON with review notes.
JSON Schema Breaking Changes Checker Compare released and proposed JSON Schemas, then find required-field, type, enum, constraint, closure, and local-ref breaking changes.
JSON Sorter Sort JSON object keys in your browser, choose recursive or top-level ordering, and review duplicate-key warnings, order changes, path rows, and a key-depth chart.
JSON Validator Validate JSON, JSONC, JSON5, or JSON Lines in your browser, then review syntax errors, duplicate keys, precision risks, and formatted output.
JSON to CSV Converter Turn JSON arrays or JSON Lines into CSV or TSV, choose record paths and nested-value handling, and guard spreadsheet-bound cells.
JSON to TypeScript Converter Turn sample JSON or JSON Lines into TypeScript declarations locally with optional-field inference, null handling, review notes, guard code, charts, and exports.
JSON-LD Generator Generate JSON-LD for Article, Product, Organization, or FAQ pages, then review visible-content matches, audit rows, and copy-ready markup.
JSONPath Tester Test JSONPath selectors against pasted or loaded JSON locally, then review matched values, paths, JSON Pointers, type counts, charts, syntax notes, and reusable code snippets.
JUnit Test Report Analyzer Analyze JUnit XML from CI runs in your browser with pass-rate gates, failure triage, retry clues, skipped cases, and slow-test flags.
JWK To PEM Converter Convert JWK or JWKS keys to SPKI public or PKCS#8 private PEM with local validation, thumbprints, and export-ready key details.
JWT Claims Risk Checker Check a JWT or decoded payload for risky claims, lifetimes, issuer and audience mismatches, broad scopes, and readable sensitive data.
JWT Decoder Decode a compact or Bearer JWT in your browser, inspect readable claims, and review timing, issuer, audience, and signature-trust warnings.
JavaScript Minifier Minify JavaScript in your browser with syntax feedback, size and gzip checks, source-map output, and safer settings for modules or scripts.
Job Satisfaction Survey Assess job satisfaction with the 36-item JSS, including reverse-scored totals and nine facet bands, plus support gaps and answer review.
Jumbo Frame Savings Calculator Calculate jumbo-frame packet-rate relief, wire-overhead savings, MTU curve data, and deployment checks from your traffic and path assumptions.
Jungian Type Profile Assessment Answer a 20-item Jungian preference assessment, then review your four-letter proxy code, pair margins, radar balance, and function preview.
Junk Removal Quote Calculator Estimate junk removal quotes from truck fill, material type, access, disposal, travel, timing, tax, and margin warnings before booking.
Kafka Partition Count Calculator Plan Kafka topic partitions from throughput, event rate, consumer parallelism, replication footprint, and rounded broker capacity checks.
Keepalived VRRP Config Generator Build a Keepalived VRRP config from VIPs, priorities, peer mode, health tracking, and failover timing checks before copying output.
Kessler Psychological Distress Scale (K10) Assessment Score K10 psychological distress for the last 4 weeks, compare common and Australian bands, and review high items, factor load, and support cues.
Kessler Psychological Distress Scale (K6) Screener Screen recent psychological distress with six K6 questions, compare the 0 to 24 total with 5+ and 13+ cutoffs, and review item drivers.
Key-Value Config Converter Convert INI, .properties, and .env config text into clean key ledgers, JSON, YAML, or handoff formats with duplicate and comment notes.
Knockout Advancement Calculator Calculate who advances from a two-leg knockout tie with host order, rule profiles, extra time, penalties, and a scoreline map.
Kubernetes Cluster Capacity Calculator Calculate Kubernetes safe replicas from node allocatable resources, pod requests, rollout surge, PDB floors, failure drills, and pod IP limits.
Kubernetes Deployment Generator Build Kubernetes Deployment YAML with Service, probes, rollout, security, topology, and readiness checks before copying or downloading.
Kubernetes Deprecated APIs Checker Find Kubernetes manifests that use APIs removed by a target version, with upgrade blockers, migration queue rows, and replacement snippets.
Kubernetes Events Timeline Analyzer Analyze Kubernetes event output in your browser, grouping Warning reasons, object hot spots, repeat counts, and timeline bursts from kubectl text or JSON.
Kubernetes NetworkPolicy Generator Generate Kubernetes NetworkPolicy YAML from selectors and ingress or egress allow rows, with peer syntax checks, rollout commands, and flow maps.
Kubernetes Pod Security Context Checker Check Kubernetes workload YAML for securityContext gaps, Pod Security profile blockers, inherited settings, risk scores, and patch cues.
Kubernetes Resource Requests Checker Check Kubernetes manifests for missing CPU and memory requests, limit policy gaps, QoS signals, scheduler footprint, and sizing cues.
Kubernetes Upgrade Skew Calculator Check Kubernetes upgrade version skew across API servers, controllers, kubelets, kube-proxy, and kubectl with rollout order notes.
LACP Bundle Capacity Calculator Calculate usable LACP bundle capacity, failure headroom, and single-flow pinning risk from member speed, reserve, demand, and hash efficiency.
LED Savings Calculator Compare old lighting with LED replacements, estimate annual bill savings, payback, lifetime net value, fixture checks, and CO2 impact.
LaTeX Editor Edit LaTeX equations with live preview, brace and macro diagnostics, and reusable MathML, AsciiMath, SVG, image, or PDF outputs.
LaTeX Table From CSV Generator Turn CSV, TSV, semicolon, or pipe-delimited rows into LaTeX table code with parsing checks, package notes, and column audit output.
Ladder Reach Calculator Calculate ladder reach for roof access, wall work, or stepladder jobs with size recommendations, fit margins, load checks, and setup cautions.
Landed Cost Per Unit Calculator Calculate landed cost per unit from goods value, freight, duties, tax, fees, and target margin with scenario pressure checks.
Landscape Rock Coverage Calculator Estimate landscape rock coverage from area, depth, density, reserve, and supplier units with bulk, bag, delivery, fabric, and cost checks.
Large Language Model (LLM) Usage Cost Calculator Estimate LLM API spend from prompt and output tokens, retries, cache hits, fixed fees, and budget caps with model price comparisons.
Laser Cut Settings Estimator Estimate starter laser cutting power, speed, passes, focus, kerf, and scrap-test checks for common CO2 and diode machine setups.
Late Work Penalty Calculator Calculate an adjusted late-work score from due and submitted times, grace windows, day or hour counting, caps, cutoffs, floors, and rounding.
Lawn Fertilizer Bags Calculator Plan how many lawn fertilizer bags to buy from label coverage or nitrogen target, with N-P-K checks, reserve, season cost, and spread notes.
Lawn Mowing Quote Calculator Estimate a lawn mowing quote from turf area, service frequency, trimming scope, route time, cost floor, and margin guardrails before sending.
Lawn Seed Calculator Calculate how much grass seed to buy from lawn area, label rate or bag coverage, pure-live-seed adjustment, whole-bag rounding, and cost.
Lean Body Mass Calculator Estimate lean body mass from height, weight, sex, and body-fat checks, then compare formula spread, FFMI, warnings, and charts.
Learning Quiz Pack Generator Build a repeatable visual-literacy quiz pack with seeded geography, signal, and Braille questions, answer keys, coverage checks, and mix charts.
Lens Equivalence Comparator Compare lenses across camera formats, matching field of view, depth-of-field look, video crops, and close real-lens substitutes.
Letter Tracing Sheet Generator Create letter tracing worksheets from custom A-Z sets with case options, guide lines, count summaries, formation cues, and repeatable seeds.
Liebowitz Social Anxiety Scale (LSAS-SR) Assessment Assess past-week social anxiety with LSAS-SR fear and avoidance totals, 30/60 anchors, profile splits, charts, and in-browser scoring.
Life Orientation Test-Revised (LOT-R) Assessment Score the LOT-R optimism scale from all 10 statements, review direct and reverse-scored support, and keep the continuous 0 to 24 result in context.
Load Balancer Failover Time Calculator Model load balancer failover timing from health probes, thresholds, reroute delay, DNS TTL, drain windows, RTO status, and scenarios.
Load Balancer Pool Capacity Calculator Calculate load balancer pool capacity from backend RPS, weights, health, utilization, growth, and N+ reserve with bottleneck cues.
Locus of Control Orientation Proxy Assessment Assess locus-of-control patterns with 12 paired prompts, then compare self-direction, chance, and powerful-others scores with tilt and spread.
Log Sampling Rate Calculator Calculate a log sampling rate from event volume, event size, storage target, reserves, bursts, and overhead with keep-policy guidance.
Logic Grid Puzzle Generator Generate a reproducible logic grid puzzle with custom categories, clue wording, uniqueness checks, printable grids, answer key, and constraint map.
Long Division Calculator Calculate long division with exact quotient and remainder checks, decimal continuation, repeat detection, and a step-by-step work table.
Lorem Ipsum Generator Generate placeholder text by paragraph, sentence, or word target with tone, seed, vocabulary, metrics, and sentence-length checks.
Lumber Calculator Calculate lumber boards to buy from finished cuts, stock size, kerf, waste, bundle rounding, and pricing in metric or board-foot units.
MAC Address Details Lookup Look up a MAC address, normalize EUI-48 or EUI-64 formats, and separate local bit flags, vendor evidence, and randomized-device warnings.
MAC Address Generator Generate local MAC address batches with prefixes, bit policies, format views, uniqueness checks, seeded replay, lead-byte anatomy, and batch audit exports.
MAS-12 Medication Adherence Proxy Assessment Check medication-routine friction with a MAS-12-style proxy, lane scores, guide bands, and prompts for pharmacist or prescriber follow-up.
MBTI-Style Type Preference Proxy Assessment Reflect on MBTI-style preferences with a 28-item proxy that shows pair margins, close-call flags, a tilt chart, and answer review.
MTA-STS Validator Validate a mail domain's MTA-STS record, HTTPS policy, certificate freshness, and readiness checks before moving to enforcement.
MTU MSS Calculator Calculate a TCP MSS clamp from path MTU, tunnel overhead, safety reserve, and IP version, with effective MTU and DF ping checks for VPN changes.
MX Record Lookup Check MX records for a domain, URL, or mailbox, with Null MX detection, host expansion, resolver comparison, and mail-policy signal checks.
Macrame Cord Length Calculator Calculate macrame cord cut lengths, mounted cord counts, density multipliers, reserve, spool packages, leftover cord, and project cost.
Macro Target Calculator Calculate daily calories, macro grams, protein density, meal splits, and warning cues from body metrics, activity, goal pace, and BMR options.
Maintenance Window Conflict Checker Check maintenance windows for time overlaps, owner or dependency collisions, blackout hits, concurrency spikes, and review-ready conflict briefs.
Malaysia PCB Calculator Calculate Malaysia PCB/MTD for a 2026 payroll month with salary, bonus, TP1/TP3, zakat, CP38, and source-backed audit tables.
Malaysia Tax Deductions and Reliefs Calculator Calculate Malaysia resident tax reliefs for YA 2024 or 2025, cap claims and donations, and turn aggregate income into chargeable income.
Map Outlines Quiz Practice map outline recognition across US states, territories, or world countries with seeded quizzes, load checks, answer review, and score charts.
Marathon Pace Predictor Estimate marathon finish time from weekly distance, training speed, and runs per week, with pace splits, warnings, and readiness charts.
Marathon Training Schedule Planner Build a marathon training schedule from race date, current long run, weekly distance, cutback rhythm, taper length, guardrails, and calendar exports.
Maritime Signal Flags Quiz Practice maritime signal flags for ICS letters, numeral pennants, or mixed drills, then review your score, missed flags, and accuracy split.
Markdown Previewer Preview Markdown from pasted text or a local file, compare GFM and CommonMark behavior, and check sanitized HTML, headings, links, and exports.
Markdown Table Generator Turn CSV, TSV, semicolon, or pipe rows into a GitHub-style Markdown table with header detection, pipe escaping, and column audits.
Markdown to HTML Converter Convert Markdown into sanitized HTML fragments or full documents, preview the rendered output, and review link, heading, and raw-HTML notes.
Marking Time Calculator Estimate grading time from submissions, per-item minutes, daily hours, deadline, buffers, batch breaks, overrun warnings, and daily targets.
Markup Calculator Calculate markup, margin, and list price from unit cost, fees, discounts, and targets with break-even checks and scenario guidance.
Maslach Burnout Inventory (MBI) Assessment Assess MBI burnout dimensions for work strain with separate EE, DP, and PA scores, band guides, burden-item flags, and follow-up notes.
MathML Editor Edit MathML markup with live native or SVG preview, namespace and structure checks, element charts, and formatted markup exports.
Matrix Screensaver Simulator Build a Matrix-style code rain screensaver with glyph sets, density, speed, glow, fullscreen preview, and stream metrics for readable loops.
Maximal Oxygen Uptake (VO2 Max) Calculator Estimate VO2 max from heart-rate, Cooper, 1.5-mile, or Rockport data with METs, absolute oxygen use, warnings, and benchmark bands.
Meditation Timer Plan a meditation sit with a live countdown, start and interval bells, cue sliders, schedule tables, chime charts, and quiet device cues.
Meeting Agenda Generator Build a timeboxed meeting agenda from outcomes, attendees, and topic rows with readiness checks, owner cues, and overbooked-time warnings.
Meeting Cost Calculator Estimate meeting cost from attendee rates, duration, prep time, recurrence, and right-size scenarios with cost-mix charts and audit checks.
Meeting Minutes Generator Turn meeting notes into structured minutes with decision logs, action registers, readiness checks, and copyable Markdown for follow-up.
Meta Tag Generator Generate search and social meta tags from page facts, then review titles, canonical URLs, robots rules, images, and copy-ready head markup.
Microstrip Impedance Calculator Estimate single-ended PCB microstrip impedance or solve target trace width from stackup geometry, Dk presets, model comparison, and tolerance checks.
Mid-Parental Target Height Calculator Estimate a child's mid-parental target height from parent heights, compare classic and adjusted methods, and review family bands with growth cautions.
Mindful Attention Awareness Scale (MAAS-15) Assessment Assess everyday mindful attention with a MAAS-15 mean, support and review-item counts, reflective lane cues, charts, and answer exports.
Mini-IPIP Big Five Assessment Take a Mini-IPIP Big Five assessment with browser-based scoring, reverse-keyed trait means, profile spread, a trait ring, and answer audit.
Missing Number Sheet Generator Create missing-number worksheets from ranges, steps, blank placement rules, repeatable seeds, answer keys, ledgers, and setup notes.
Mobile Detailing Quote Calculator Build a mobile detailing quote with vehicle size, condition, travel, add-ons, labor cost, margin guard, tax, and customer-ready notes.
Mole Gram Particle Converter Convert grams, moles, and particles through molar mass with exact or classroom Avogadro values, formula steps, lab checks, and scale charts.
Monthly Budget Calculator Plan a monthly budget from take-home income, compare needs, wants, goals, cushion, and emergency runway against guide targets.
Monthly Retainer Capacity Calculator Check monthly retainer capacity against included hours, response reserve, rollover exposure, existing work, margin stress, and safe client slots.
Mood and Stress Screener Comparator Compare PHQ-9, GAD-7, DASS, Kessler, stress, and older-adult mood screeners by concern, time, context, safety, and handoff needs.
Morse Code Decoder Decode written Morse into readable text, audit unknown groups, tune cadence audio, and export timing charts, metrics, WAV, and JSON.
Morse Code Generator Convert text or TXT files into Morse code, then tune WPM, Farnsworth spacing, tone, silence, playback, WAV export, timeline charts, and JSON.
Morse Code Quiz Practice Morse code by matching dot-dash patterns to letters, numbers, or mixed characters, then review your score and missed answers.
Mortgage Calculator Estimate a mortgage payment with escrow, PMI, cash to close, amortization, extra principal savings, and payoff charts for one purchase scenario.
Motorcycle Tire Pressure Calculator Set cold motorcycle tire pressure for solo, passenger, and luggage rides with front/rear targets, safe windows, temperature drift, and add-or-bleed checks.
Moving Labor Hours Calculator Estimate moving labor hours from home size, crew size, access friction, heavy items, drive time, booking rules, and optional quote costs.
Mulch Coverage Calculator Calculate mulch coverage from bed shape, top-up depth, exclusions, bag size, and supplier rules with bulk, bag, cost, and lift-risk estimates.
Multiple Choice Sheet Generator Build multiple-choice worksheets from row or Aiken input with seeded ordering, answer keys, quality checks, and printable exports.
MySQL Slow Query Log Analyzer Analyze MySQL slow query logs in your browser, group repeated SQL shapes, rank slow or scan-heavy queries, and export tuning evidence.
NAICS Code Lookup Search NAICS codes by code or industry text, compare ranked 2022 and retired 2017 matches, and review hierarchy, change flags, and assignment notes.
NAT Pool Capacity Calculator Size a NAT/SNAT pool from public IPs, user fan-out, reserves, growth, and hot-destination pressure with capacity charts and warnings.
ND Filter Exposure Calculator Calculate the ND filter strength for stills or video, with exact stops, practical filter picks, shutter-angle targets, and stack checks.
NEO PI-R Proxy Assessment Take a 120-item IPIP NEO-style proxy assessment with raw domain and facet means, reverse-key checks, profile contrasts, and answer review.
NGINX Proxy Headers Checker Check an NGINX proxy block for forwarded-header gaps, trust-boundary risks, WebSocket needs, timeout issues, and prioritized fixes.
NTP Offset Log Checker Check NTP or chrony rows, compare offset, jitter, reach, stratum, and selected-source evidence, and turn drift into a peer ledger.
Name Tracing Sheet Generator Create roster-based name tracing sheets with case handling, guide lines, row density checks, long-name review, and repeatable ordering.
Nameserver Health Check Check a domain's nameserver health with resolver comparison, glue and CNAME checks, SOA timer review, IPv6 coverage, and repair steps.
Nanny Payroll Taxes Calculator Estimate 2026 nanny payroll taxes from cash wages, FICA and FUTA thresholds, state unemployment, paycheck withholding, and reserve totals.
Nanny Share Cost Calculator Estimate each family's nanny-share budget with shared and solo hours, overtime, host credit, expenses, payroll load, and monthly totals.
NetFlow Top Talkers Analyzer Analyze NetFlow or IPFIX rows to rank top talkers, compare byte, packet, and flow shares, flag parser or egress clues, and export evidence.
Netcat Command Generator Build a netcat or ncat command for connect, listen, scan, TLS, proxy, or transfer tasks, with shell-aware quoting and compatibility warnings.
Netplan Config Generator Build Netplan YAML for static interfaces with renderer, DNS, routes, MAC matching, MTU, and validation warnings before applying changes.
Network Audit Findings Report Turn network audit findings into a prioritized register, remediation queue, evidence-gap review, and severity-by-area report for owner handoff.
Network Change Plan Report Draft a network change plan with topology context, readiness gates, run order, rollback checks, residual risk, exports, and a cutover profile.
Network Throughput Calculator Estimate usable network throughput and transfer time from link speed, RTT, loss, TCP window, streams, and packet-rate caps with bottleneck guidance.
Nginx Server Block Generator Build an NGINX server block for static, PHP-FPM, or proxy sites with TLS, HSTS, upstream, access, header, and deployment checks.
Noise Figure Cascade Calculator Calculate RF receiver noise figure from ordered stage gains, passive losses, bandwidth, and SNR targets with Friis terms and sensitivity estimates.
Number Tracing Sheet Generator Create number tracing worksheets with range limits, trace-copy layouts, count cues, formation guides, warnings, and repeatable seeds.
ONET Interest Profiler-60 (IP-SF) Assessment Rate 60 ONET work activities to build a Holland RIASEC code, compare theme scores, and review task evidence for career exploration.
OAuth Redirect URI Policy Checker Check OAuth redirect URI registrations against observed requests, catch exact-match drift, wildcard scope, fragments, and nested redirect risks.
OCR PDF Tool Extract text from PDF pages in your browser, using native text when available and OCR with page confidence, DPI guardrails, and TXT/JSON exports.
OSPF Interface Cost Calculator Calculate OSPF interface cost from reference bandwidth and interface speed, compare manual overrides, and flag cost 1 collapse across fast links.
Object Storage Cost Calculator Estimate monthly object storage cost from stored data, object size, requests, retrieval, egress, lifecycle moves, replication, and editable rates.
Observability Event Volume Calculator Estimate retained observability storage from event rate, event size, and retention, then compare compression, replicas, overhead, reserve, and quota.
Observability Ingest Cost Calculator Estimate monthly observability ingest cost from logs, traces, metrics, collector reduction, indexing, retention, discounts, and growth.
Office Cleaning Bid Calculator Build an office cleaning bid from production pace, cleaner-hours, visit frequency, overhead, add-ons, minimum visit floors, and margin checks.
On-call Handover Report Prepare an on-call handover from shift rows, owners, and escalation notes, then review hot items, gaps, and readiness before sign-off.
One Rep Max (1RM) Calculator Estimate your one-rep max from a completed set, compare formula spread, and build rounded training loads, rep ladders, and confidence cues.
Online Bomberman Game Play a Bomberman-style maze run with bombs, breakable blocks, powerups, difficulty modes, local best scores, events, and a score timeline.
Online Breakout Game Play a Breakout-style brick game with preset or custom setups, streak scoring, local best scores, and exportable run summaries.
Online Clock Check live local, UTC, and world-zone time with offset rows, handoff window flags, Unix seconds, and calendar invite text for teams.
Online Digger Game Play a Digger-style tunnel run, collect emeralds and broken-bag gold, then review score sources, shot accuracy, bag drops, and route pace.
Online File Compressor Compress one local file in your browser, choose archive or stream formats, and review size change, SHA-256 checks, split parts, and exports.
Online Pacman Game Play a Pac-Man-style maze run, clear pellets across difficulty and maze modes, then review power chains, fruit points, history, and run JSON.
Online Snake Game Play Snake with speed and wall rules, chain apples for slow-motion bonuses, then review score pace, crash cause, history, and timeline exports.
Online Space Invaders Game Play Space Invaders waves with mouse, keyboard, or touch controls, then review hit accuracy, threat pressure, best scores, and run summaries.
Online Tetris Game Play Tetris with speed presets, ghost and hold assists, next-piece previews, touch controls, and a score-focused run summary.
Online Tic Tac Toe Game Play Tic Tac Toe against a computer or local opponent, with hints, threat markers, board evaluation, match logs, and streak stats.
Op-Amp Gain Calculator Calculate op-amp gain for common feedback circuits, solve missing resistors, and check rail swing, bandwidth, slew rate, tolerance, and load current.
Open Graph Tag Generator Generate Open Graph and X card tags from page titles, URLs, images, article fields, and crawler checks before copying head markup.
Open Graph Tag Previewer Preview social link cards from pasted HTML or a public URL, with Open Graph, X card, canonical, image-fit, fallback conflict, and crawler warnings.
OpenAPI Operation Coverage Checker Check OpenAPI operation coverage against test evidence, find missing or unmatched methods, and turn release-gate gaps into an owner-ready queue.
OpenVPN Client Config Generator Generate an OpenVPN client profile from endpoint, routing, authentication, cipher, and TLS settings, with review warnings before import.
Overtime Pay Calculator Calculate gross pay from hourly rate, regular and overtime hours, daily thresholds, premium tiers, rounding, and flat add-ons with audit tables.
Ovulation Calculator Estimate likely ovulation, peak fertile days, next-period dates, and cycle-variation warnings from your last period and cycle history.
PANAS-SF Affect Snapshot Assessment Rate a past-week PANAS-SF affect snapshot with separate Positive and Negative Affect totals, word-level signals, charts, and answer exports.
PDF Compressor Compress a PDF in your browser, preview expected size changes, and catch quality, cleanup, or file-limit warnings before downloading.
PDF Merger Merge local PDF files in the order you choose, review page counts and size guards, set output metadata, and download one browser-built PDF.
PDF Page Deleter Delete selected PDF pages in your browser, preview the keep/delete map, and catch range, size, signature, or accessibility warnings.
PDF Page Extractor Extract selected pages from one local PDF, preserve typed order or remove repeats, and verify the new file with a page manifest and checks.
PDF Page Manager Arrange, rotate, split, and download PDF page selections locally with page-plan checks, source ledgers, packet ZIPs, and size guards.
PDF Page Marking Planner Add page numbers and watermarks to selected PDF pages in your browser, with range parsing, placement checks, tiled stamps, and PDF download.
PDF Page Numberer Add page numbers to a PDF in your browser, choose ranges and label styles, then check placement coordinates before downloading.
PDF Page Reorderer Reorder one local PDF with ranges, presets, and duplicate handling, then download a rebuilt file with a page manifest and checks.
PDF Password Workflow Planner Plan PDF password workflows with local credential generation, entropy checks, permission flags, recipient risk notes, and redacted handoff exports.
PDF Protector Protect a PDF in your browser with qpdf encryption, open and owner passwords, permission profiles, metadata handling, and verification checks.
PDF Redactor Plan PDF redactions locally, scan selectable text for targets, flag hidden-data risks, and export evidence for a true redaction workflow.
PDF Repair Tool Inspect a damaged PDF locally, review header and parser signals, and download a normalized copy when the browser can safely rebuild it.
PDF Rotator Rotate selected pages in a local PDF by range, parity, or orientation, then review the rotation map and download a rewritten copy.
PDF Signer Add a visual signature stamp to a local PDF with typed, drawn, or image input, placement checks, and clear certificate-signature warnings.
PDF Splitter Split a local PDF into custom ranges, every-page files, or fixed packets with range checks, a packet map, manifest, and ZIP download.
PDF Unlocker Unlock an owner-approved PDF locally with qpdf, using a known password or empty-user restriction setting, then download a verified copy.
PDF Watermarker Add text watermarks to a PDF in your browser, target exact pages, tune opacity, rotation, tiling, and download a marked copy.
PDF to File Converter Convert a local PDF into text, rows, documents, slides, or page images with page ranges, password handling, and fidelity audit checks.
PEM Bundle Extractor Extract PEM blocks from pasted text or files, group certificates, CSRs, keys, and other labels, and track split output with line spans and SHA-256 hashes.
PTO Accrual Calculator Project PTO balances from accrual rules, used and planned leave, caps, and carryover limits with a period ledger, charts, and policy checks.
PXE Boot Menu Generator Generate PXELINUX, iPXE, and GRUB boot menus from boot rows, defaults, timeouts, and fallbacks with ledger and validation review.
Pace & Speed Converter Convert running pace and speed between min/km, min/mi, km/h, and mph, then add finish times, split checkpoints, and Riegel race estimates.
Pace Band Generator Create a race pace band from distance, finish time, marker spacing, and pacing strategy, with split tables, chart exports, and copyable text.
Package Shipping Cost Calculator Estimate parcel shipping cost from weight, dimensions, zone, surcharges, discount, packaging cost, and margin with billable-weight checks.
Packet Capture Size Calculator Estimate packet capture storage from link speed, duration, snap length, format overhead, compression, and reserve checks before a run.
Paint Calculator Estimate room paint from wall measurements, openings, coats, coverage, and waste, then compare exact litres or gallons with rounded purchase amounts.
Painting Quote Calculator Price a painting job from measured area, coats, prep, paint, labor, overhead, margin, tax, and bid checks before sending a quote.
Pallet Load Plan Calculator Build a pallet load plan from carton and pallet dimensions, compare TI-HI height and weight limits, and flag partial pallets and overhang.
Parent Daily Report Generator Create a parent daily report from meals, rest, care, activities, and notes, with family-ready wording, touchpoint checks, and exports.
Passport Photo Size Lookup Look up passport, visa, and ID photo dimensions with head-size bands, DPI pixel targets, print-sheet layouts, checklist exports, and source notes.
Password Strength Calculator Check a password in your browser, compare login and breach crack-time estimates, flag common patterns, and get safer upgrade guidance.
Patch Window Duration Calculator Plan a patch window from device count, batch concurrency, install and reboot time, with fit checks, phase timing, slack, and rollback reserve cues.
Patient Health Questionnaire (PHQ-15) Assessment Score a PHQ-15 somatic symptom check-in, review the 0 to 30 severity band, symptom drivers, body-system pattern, and prior-score change.
Patient Health Questionnaire (PHQ-9) Assessment Score a PHQ-9 depression screener, see the 0 to 27 severity band, and review Item 9, function impact, symptom drivers, and follow-up cues.
Pattern Practice Sheet Generator Make repeating-pattern practice sheets from AB through ABBA cycles, with missing-cell tasks, cut pieces, answer keys, and setup checks.
Paver Calculator Calculate how many pavers to order from area, paver size, joint gap, pattern waste, pack rounding, and paver-only cost checks.
Paycheck Calculator Estimate U.S. net pay from hourly, salary, or per-check gross wages with 2026 federal, FICA, state/local, deduction, and warning detail.
Payment Processor Fee Calculator Calculate payment processor fees, effective rates, gross-up charges, and provider comparisons from percentage, fixed, cap, and add-on costs.
Payroll Proration Calculator Calculate prorated gross pay for hires, exits, or unpaid leave, then compare calendar, workday, fixed, and custom divisor methods.
Perceived Stress Scale (PSS-10) Assessment Score a PSS-10 last-month stress check-in, review reverse-scored coping items, compare prior change, and see contributors with no-cutoff guidance.
Percentage Calculator Calculate percent-of, part-of-whole, percent change, value-after-change, and reverse percentages with denominator warnings and sense checks.
Percentile Calculator Calculate percentiles from pasted numbers or local files, compare inclusive, nearest-rank, and exclusive methods, and audit ranks and quartiles.
Personal Carbon Budget Analyzer Estimate a personal carbon budget from home energy, travel, diet, and offsets, then compare net footprint, runway, and reduction levers.
Personal Loan Calculator Estimate personal-loan payments, fees, payoff dates, total interest, and prepayment savings with schedules, warnings, and cost charts.
Personality Assessment Hub Compare personality assessment routes by goal, time, result style, context, and caveat tolerance, then review fit scores and safer wording.
Pet Travel Crate Size Calculator Estimate internal pet travel crate dimensions from A/B/C/D body measurements, bedding, shared-crate rules, and proposed crate fit checks.
Phonics Worksheet Generator Build phonics worksheets from word lists, target sounds, cues, and support levels with student sheets, answer keys, teacher notes, and coverage checks.
Photo Print Resolution Calculator Check whether an image has enough pixels for a print size, with crop reserve, target PPI, size grades, and a PPI sweep chart.
Picture Word Matching Sheet Generator Create picture-word matching sheets from cue and word rows, with seeded word banks, answer keys, source checks, and print-ready layouts.
Ping Results Analyzer Analyze pasted ping output for packet loss, RTT spikes, jitter, timeouts, and sequence gaps with charts and local text or file handling.
Pittsburgh Sleep Quality Index Assessment Assess past-month sleep quality with PSQI scoring, component drivers, the >5 review cue, efficiency math, and optional observer notes.
Pizza Dough Ball Calculator Calculate pizza dough balls from portion weight, hydration, baker's percentages, yeast type, and proof timing with recipe and handling notes.
PoE Budget Calculator Plan PoE switch capacity from device rows, port count, reserve policy, cable loss, IEEE ceilings, and shedding warnings before a rollout.
Polymeric Sand Calculator Estimate polymeric sand bags from patio area, paver size, joint width, depth, waste, yield, and install checks before buying.
Pomodoro Timer Run a Pomodoro timer with bounded focus and break sliders, live cycle controls, goal ETA, schedule exports, and browser cues.
Pool Filter Size Calculator Size a pool filter from pool volume or known flow, compare sand, cartridge, and DE area, and review pump, pipe, and cleaning checks.
Pool Volume Calculator Calculate pool volume in liters and gallons from shape, water depth, displacement, fill rate, turnover, and dose-scaling assumptions.
Port Exposure Summary Checker Review a port exposure inventory, flag public high-risk services and missing owner context, and roll hosts into a cleanup queue.
Port List Checker Clean messy port lists into TCP/UDP target strings, compressed ranges, IANA bands, and service-review cues before scans or firewall changes.
Post Hole Concrete Calculator Estimate concrete bags for post holes from hole size, post displacement, gravel base, waste margin, bag yield, and whole-bag rounding.
PostgreSQL EXPLAIN Plan Analyzer Review PostgreSQL EXPLAIN output from text, JSON, or XML, spot cost, scan, spill, buffer, and row-estimate issues, and get a focused plan brief.
Postgres Work Mem Calculator Calculate a safer PostgreSQL work_mem setting from RAM, concurrency, hash weighting, and spill targets with memory-pressure warnings.
Posttraumatic Stress Disorder Checklist (PCL-5) Assessment Complete a 20-item past-month PCL-5 check, compare 31+ and 33+ cut points with DSM-5 clusters, and export a shareable symptom brief.
Power Factor Calculator Calculate power factor from kW and kVA, size lagging or leading kVAR correction, and estimate capacitor microfarads with field-check warnings.
Pranayama Sequence Planner Build and rehearse a pranayama sequence from breath ratios, timed steps, pace sliders, rests, and nostril cues with a phase ledger.
Pre-Writing Strokes Sheet Generator Create printable pre-writing stroke sheets with sequenced lines, curves, trace-fade-try lanes, direction cues, readiness checks, and repeatable versions.
Pregnancy Caffeine Limit Calculator Track a pregnancy caffeine day total against a 200 mg or custom target, with remaining allowance, serving fit labels, and caution notes.
Pregnancy Due Date Calculator Estimate a pregnancy due date from LMP, conception, IVF transfer, or ultrasound records, then review term windows and care timing.
Pregnancy Weight Gain Range Calculator Calculate pregnancy weight gain from pre-pregnancy BMI, gestational age, singleton or twin pregnancy, and current gain with week-to-date guidance.
Pressure Washer Nozzle Size Calculator Find the right pressure washer nozzle size from pump flow and target pressure, with stocked-tip matching, wear, and component-rating checks.
Pressure Washing Quote Calculator Estimate a pressure washing quote from surface scope, condition, access, labor, chemicals, travel, minimums, and margin checks.
Primary Care PTSD Screen (PC-PTSD-5) Screen past-month PC-PTSD-5 responses after the trauma gate, compare 3+ and 4+ cut points, and review endorsed symptoms for follow-up.
Profit Margin Calculator Check revenue against COGS to see gross margin, markup, target-revenue gaps, net profit view, break-even headroom, and warnings.
Progressive Muscle Relaxation (PMR) Coach Plan and run progressive muscle relaxation with preset body maps, live tense-relax cues, plan exports, run logs, and routine mix charts.
Project Budget Burn Calculator Estimate project budget burn from actual spend, commitments, dates, and progress, then check runway, earned-value signals, charts, and review exports.
Project Quote Calculator Price a fixed-fee project from labor, expenses, buffer, overhead, margin, tax, and deposit terms with guardrails for risk and cash timing.
Projected Adult Height Calculator Estimate a child's projected adult height from standing height, age, sex, and parent heights, with scenario ranges and family-band checks.
Prometheus Cardinality Cost Calculator Estimate Prometheus cardinality cost from active series, scrape interval, retention, pricing, and label offenders with reduction savings.
Prometheus Retention Storage Calculator Estimate Prometheus retention storage from active series or samples/sec, with WAL/head reserve, disk headroom checks, and retention.size guidance.
Prometheus Scrape Config Generator Build a Prometheus scrape config from targets, labels, intervals, limits, and per-target overrides, then review the generated YAML.
Prompt String 1 (PS1) Generator Build a Bash PS1 prompt from ordered tokens, colors, imports, and previews, with warnings for invalid variables, dates, and ANSI styling.
Propane Tank Runtime Calculator Estimate propane tank runtime from tank size, fill level, BTU load, reserve, daily use, and vapor-flow checks for safer planning.
Properties Converter Convert Java properties text into clean JSON, YAML, INI, env, and audit views with duplicate-key warnings, path previews, and schema checks.
Protein Intake Calculator Calculate a daily protein target from body weight, goal, training load, diet pattern, meals, and health context, with gap and calorie-share checks.
Proxy Server Checker Check proxy evidence from pasted or current request headers, review forwarded IP chains, and spot CDN, spoofing, or trust-hop issues.
Psychological Flexibility Assessment (AAQ-2) Assess psychological flexibility with AAQ-II scoring, item support cues, reference-band guidance, and browser-based self-report exports.
Pull Request Cycle Time Calculator Calculate pull request cycle time from PR CSV timestamps, compare pickup delay and slow-tail percentiles, and export ledgers, charts, and JSON.
Punycode IDN Converter Convert Unicode and Punycode hostnames between display and DNS forms with label audits, length checks, script warnings, and copy-safe outputs.
QR Batch Generator Generate QR code image batches from pasted rows or CSV/TXT files, with duplicate checks, readiness audit, manifests, and ZIP export.
QR Label Sheet Generator Create printable QR label sheets from CSV or TXT rows, with stock or custom grids, payload checks, contrast warnings, and scan-ready print output.
Qibla Finder Find Qibla direction from default IP Geolocation, city/place search, Browser GPS, or manual coordinates with true or magnetic bearing, map line, and compass steps.
QoS Bandwidth Allocation Calculator Plan QoS class bandwidth from a parent rate, then check reserved Mbps, priority share pressure, burst ceilings, and best-effort headroom.
Quarterly Estimated Tax Calculator Estimate your 2026 U.S. federal quarterly tax payments with safe-harbor checks, self-employment tax, due dates, and worksheet exports.
Queue Buffer Delay Calculator Estimate queue buffer delay from buffer size and link rate, compare full-queue and busy-period latency, and find target buffer limits.
Queue Worker Capacity Calculator Size queue workers from arrival rate, throughput, backlog, and drain targets, with utilization headroom, cap warnings, and burn-down charts.
Quick Response (QR) Code Decoder Decode a QR image in your browser, inspect the payload type and URL clues, and review safety flags plus scan-trace details before opening.
Quick Response (QR) Code Generator Create a QR code for URLs, Wi-Fi, contacts, messages, events, or text with styling, logo checks, readiness scoring, and image exports.
RACI Matrix Generator Turn activity rows into a RACI matrix with ownership checks, role-load signals, handoff guidance, and chart-ready review outputs.
RADIUS Client Config Generator Generate FreeRADIUS client blocks from NAS rows, with shared-secret review, address checks, hardening directives, and deployment notes.
RADIUS Request Load Calculator Estimate RADIUS request load from access events, accounting updates, retransmits, and server budgets, then compare active-pool and N-1 capacity.
RAID Capacity and Sizing Calculator Plan RAID usable capacity from drive count, layout, spares, overhead, and reserve with target-fit checks, alternatives, and capacity charts.
RAID Performance Calculator Estimate RAID safe IOPS and throughput from drive benchmarks, write mix, spares, controller caps, degraded behavior, and target margin.
RAID Planning Suite Plan a RAID layout with usable capacity, workload headroom, rebuild and URE risk, growth runway, charts, and downloadable reports.
RAID Reliability and MTTDL Calculator Estimate RAID MTTDL from AFR, rebuild time, URE rate, spares, and fleet size with loss probabilities, mitigation options, and tradeoff charts.
RAID Sizing Calculator Calculate RAID and RAID-Z usable capacity with spares, fill headroom, chassis fit checks, drive-size ladders, charts, and rebuild risk estimates.
RAND SF-12 Health Survey (SF-12) Score 12 SF-12 health answers as an inspectable 0-to-100 profile with PCS/MCS means, domain gaps, charts, and norm-scoring cautions.
RAND SF-36 Health Survey (SF-36) Score RAND-36 answers into eight 0-to-100 health domains, spot physical/mental profile gaps, and keep the one-year change item separate.
ROI Calculator Calculate ROI from cost, returns, and holding period, with net gain, annualized ROI, simple payback, benchmark gap, and charts.
RPO/RTO Gap Calculator Compare target and measured RPO/RTO windows, flag data-loss or restore-time misses, and estimate extra change or downtime exposure.
RSA Keys Converter Convert RSA PEM keys between PKCS#1, PKCS#8, and public-key wrappers in your browser with fingerprints, passphrase checks, and format guidance.
RSU and Stock Option Tax Calculator Estimate U.S. taxes for RSU vests, NSO exercises, and ISO sales with AMT, payroll tax, withholding, capital gains, and net cash checks.
Race Finish Time Calculator Calculate race finish time from distance, pace, or speed, then review split clocks, planned stops, cutoff margin, charts, and exports.
Race Finish Time Predictor Predict a race finish from a prior result, adjust the Riegel exponent and race-day conditions, then compare paces, splits, and scenarios.
Race Pace and Finish Time Suite Plan race pace from a target time, speed, prior race, or training block with split checkpoints, scenario ranges, pace bands, and charts.
Race Timer Suite Track race elapsed time and split pace, capture live laps, compare cumulative splits, and export a readable race summary for follow-up.
Rack Power Density Calculator Plan rack power density from device watts, rack units, feed rules, growth, and power factor with headroom, heat load, failover, and density cues.
Random Number Generator Generate random numbers from a range with secure or seeded draws, no-repeat rules, weighted profiles, diagnostics, charts, and exports.
Random Picker Pick random names or rows from a list, then document the draw with seeds, weighting rules, an odds ledger, charts, and exports.
Range Hood CFM Calculator Calculate range hood CFM from hood width, burner output, kitchen volume, duct velocity, and makeup-air limits before choosing a model.
Rate Limit Backoff Schedule Calculator Plan a rate-limit retry schedule with Retry-After floors, jitter windows, pacing math, timeout checks, and shared-client safety notes.
Rate of Perceived Exertion (RPE) Calculator Convert Borg, CR10, or lifting RPE into intensity bands, scale equivalents, heart-rate cues, charts, and sRPE load for workout review.
Readability Checker Check English text readability with grade estimates, reading-ease score, sentence flags, word-load cues, and charts for editing.
Reading Fluency WCPM Calculator Calculate WCPM from words, errors, and elapsed time, then compare reading accuracy, benchmark bands, and progress notes for oral fluency probes.
Reading Level Checker Check an English passage against grade-level formulas, compare target fit, and find long sentences or words that may raise reading difficulty.
Rebar Calculator Estimate a rectangular slab rebar grid with cover-adjusted counts, actual spacing, stock-bar rounding, weight, waste, and cost checks.
Recruiting Pipeline Metrics Calculator Calculate recruiting funnel metrics from applicant counts, with conversion leaks, offer acceptance, time-to-fill checks, charts, and exports.
Redis Memory Size Calculator Calculate Redis maxmemory and host RAM in your browser, including key overhead, TTL metadata, replicas, buffers, and RSS headroom.
Redundant Array of Independent Disks (RAID) Calculator Plan RAID usable capacity from disk sizes, layout, spares, overhead, fill target, and rebuild risk with topology and matchup checks.
Regex Sample Matches Checker Test a JavaScript regex against should-match and should-reject samples, with verdicts, match spans, flags, and timeout guardrails.
Regex Tester Test a JavaScript regex against sample text with flags, match and capture tables, timeout warnings, and replacement previews before reuse.
Relationship Assessment Scale (RAS) Check relationship satisfaction with the seven-item RAS, reverse-score regret and problem items, and review midpoint, item-pattern, and privacy cues.
Release Cutover Window Calculator Calculate a release cutover window with phase timing, rollback reserve, contingency buffer, gate risk, runway scenarios, and charts for change plans.
Release Notes Generator Draft release notes from bullets, Conventional Commits, PR lines, or plain text, then review sections, warnings, and rollout-ready change rows.
Rent Split Calculator Split rent, shared utilities, and deposits across rooms with premium-room weights, rounding checks, fairness notes, and a payment roster.
Rental Property Cash Flow Calculator Estimate rental property cash flow from rent, vacancy, expenses, reserves, debt service, DSCR, cap rate, stress tests, and target rent.
Replication Backlog Time Calculator Estimate replication backlog catch-up time from write rate, current backlog, usable capacity, compression, and target headroom for recovery planning.
Resistor Color Code Decoder Decode 4, 5, and 6 band resistor color codes into nominal resistance, tolerance limits, temperature drift, and orientation checks.
Resistor Combination Finder Find series, parallel, or mixed resistor matches for a target value, ranked by nominal error with tolerance and power-stress checks.
Resolver Policy Difference Comparator Compare public DNS-over-HTTPS resolver profiles with a fan-out view of open controls, filtered tiers, validation drift, and evidence.
Resonant Frequency Calculator Calculate an LC tank's resonant frequency from L and C, then check tolerance drift, loaded Q, bandwidth, and reactance crossing.
Retaining Wall Block Calculator Calculate retaining wall blocks from wall size and product dimensions, then estimate caps, base gravel, drain rock, pipe, fabric, and material cost.
Retirement Tax Savings Calculator Estimate how a 2026 retirement contribution changes tax savings, paycheck cost, IRA limits, Saver's Credit, employer match, and growth.
Reverse DNS (PTR) Checker Check reverse DNS for an IP or hostname, review PTR answers, forward confirmation, expected-name matches, and resolver drift.
Reverse DNS Zone Generator Generate an IPv4 reverse DNS zone from CIDR and PTR rows, with SOA checks, RFC2317 parent CNAMEs, and zone-review tables before handoff.
Revised Dyadic Adjustment Scale (RDAS) Assessment Complete the 14-item RDAS, compare a 0-to-69 relationship adjustment score with the 48 cutoff, and review domains, burden items, and charts.
Revision Schedule Planner Build a study timetable from exam dates, target hours, and weekly availability, with spaced blocks, coverage gaps, and load warnings.
Ring Size Converter Convert ring measurements and regional sizes into US, UK, ISO, and nearby chart matches with band-fit notes and circumference deltas.
Risk Register Generator Build a risk register from pasted rows, score inherent and residual exposure, and prioritize owners, reviews, and treatment actions.
Road Signs Quiz Practice US MUTCD road signs by meaning, choose regulatory, warning, or mixed sets, and review seeded scores with missed-sign detail.
Robots.txt Generator Draft a robots.txt file from crawler groups, path rules, sitemap hints, and imports, then review crawl-policy warnings before publishing.
Roof Sheathing Sheets Calculator Estimate roof sheathing sheets from footprint or measured area, then review pitch, waste, panel size, H-clips, fasteners, cost, and layout checks.
Roofing Calculator Estimate shingle bundles from roof area, pitch, waste, bundle coverage, accessory lengths, and material cost in metric or imperial units.
Rooftop Solar Fit Calculator Estimate how many solar panels fit on a roof face, then check DC system size, annual kWh, target fit, and setback or shade assumptions.
Rosenberg Self-Esteem Scale (RSES) Assessment Score the Rosenberg Self-Esteem Scale in your browser, review reverse-scored items, and compare the 0-to-30 result with item support cues.
Rounding Calculator Round decimal text to places, significant figures, place values, or increments with exact decimal traces, tie rules, and error checks.
Rubric Generator Build a rubric matrix from assignment goals, criteria, weights, and levels, with point allocation, descriptor drafts, and design-audit checks.
Run-Walk Interval Calculator Plan run-walk intervals from distance and segment paces, then compare ratios, cue counts, marker times, finish estimates, and pace charts.
Running Record Accuracy Calculator Calculate running-record accuracy from running words, errors, self-corrections, time, and comprehension, with text bands, pace, cue notes, and exports.
Runway Crosswind Component Calculator Calculate runway crosswind, headwind or tailwind, gust margin, and runway options from wind, heading, units, and pilot limits.
S3 Bucket Policy Public Access Checker Check an S3 bucket policy for public, cross-account, and service-principal exposure with severity findings and remediation cues.
S3 Lifecycle Policy Generator Generate S3 lifecycle policy artifacts with filters, retention checks, JSON output, deployment snippets, and timeline review before applying.
SAML Assertion Timing Checker Check SAML assertion timing from XML or encoded captures with skew, bearer, session, replay, clock-window charts, and exportable evidence.
SAML Metadata Validator Check SAML metadata XML for entity IDs, SP or IdP roles, ACS and SSO endpoints, X.509 expiry, signature presence, and import-readiness evidence.
SARIF Security Findings Analyzer Analyze SARIF security logs in your browser with release-gate counts, priority findings, rule and file hotspots, and fingerprint warnings.
SAS-Style Anxiety Proxy Assessment Check recent anxiety load with a disclosed SAS-style proxy, then review a 25-to-100 index, lead domains, cutoff cues, and follow-up notes.
SBOM Component Risk Analyzer Review SBOM component risk from CycloneDX, SPDX, Syft, or CSV data, ranking vulnerabilities, license gaps, weak identity, and policy findings.
SCSS to CSS Compiler Compile single-file SCSS, indented Sass, or CSS locally, review output metrics, source-map options, compiler warnings, and exportable CSS artifacts.
SHAS-A Adult Health Anxiety Proxy Assessment Assess adult health-anxiety patterns with a disclosed 14-item proxy, then review the 0-42 score, cutoff context, top area, and cue table.
SLA Availability Calculator Calculate SLA availability from downtime and maintenance rules, then compare remaining budget, burn rate, breach risk, and period checkpoints.
SLO Burn Rate Alerts Generator Generate SLO burn-rate alert YAML from a service objective, PromQL error-ratio template, burn tiers, routing labels, and budget math.
SLOAN Personality Code Assessment (Proxy) Build a SLOAN-style personality code from Mini-IPIP answers, then review axis strength, swing letters, radar chart, and item evidence.
SMIMEA / OPENPGPKEY Lookup Check SMIMEA or OPENPGPKEY DNS records for an email identity, including owner-name hashing, DNSSEC AD status, payload clues, and resolver evidence.
SNMP Polling Load Calculator Estimate SNMP polling pressure from devices, OIDs, intervals, retries, SNMPv3 overhead, MTU limits, and poller capacity checks.
SPF Record Generator Generate an SPF TXT record from sender sources, provider includes, IP ranges, A/MX choices, and rollout checks for lookup budget and policy risk.
SPF Validation Report Check a domain's SPF record from DNS, trace includes and redirects, map lookup-budget usage, and export validation notes or JSON with resolver choice.
SQL Formatter Format SQL for the right dialect from pasted queries or local files, with statement ledgers, caveat warnings, and formatter audit checks.
SQL INSERT Generator Turn pasted rows or CSV files into SQL INSERT statements with dialect quoting, delimiter detection, literal typing, and row and column review.
SQLite Manager Open a local SQLite file in the browser, browse tables or views, run SQL, edit rowid-table cells, and export verified results.
SRV / NAPTR Service Discovery Check Check SRV and NAPTR service discovery for SIP, XMPP, or LDAP, compare resolver views, and find broken targets or fallback paths.
SSD Endurance (DWPD/TBW) Calculator Plan SSD endurance from DWPD or TBW, workload writes, reserve, derating, SMART counters, and growth scenarios for replacement timing.
SSH Algorithm Policy Checker Check SSH algorithm evidence against modern, compatibility, or legacy-exception policies with scorecard findings and config patch cues.
SSH Config Snippet Generator Build OpenSSH Host blocks from CSV host rows with defaults, ProxyJump paths, identity choices, host-key policy notes, and duplicate-alias checks.
SSL CA Matcher Check a leaf certificate against a candidate issuer CA with signature evidence, DN alignment, CA-policy checks, validity guards, and a trust score.
SSL Certificate Chain Checker Check a live host or pasted PEM chain for issuer links, hostname coverage, expiry, weak crypto, and bundle readiness before install.
SSL Checker Check a public hostname's TLS posture with SSL Labs grades, certificate trust paths, protocol flags, expiry risk, and a fix queue.
SSL Expiry Checker Check a live TLS certificate expiry date, renewal lead window, hostname coverage, issuer details, fingerprints, and post-renewal evidence.
SSL Matcher (Certificate, CSR, and Key) Compare a certificate, CSR, and RSA private key in your browser with SPKI fingerprints, encrypted-key handling, match warnings, and exportable evidence.
SSL OCSP Checker Check OCSP status for a live TLS host or pasted certificate, then review responder state, freshness timestamps, warnings, and replay evidence.
SVG Placeholder Generator Create SVG placeholders with exact sizes, labels, colors, patterns, contrast checks, live preview, and copyable SVG, image, and CSS outputs.
SWOLF Analyzer Analyze swim split times and stroke counts into SWOLF trends, reference drift, lap calls, charts, and exportable notes for comparable pool sets.
Salary Raise Budget Calculator Plan a salary raise budget from employee rows or one salary pool, with proration, employer burden, cap variance, scenarios, and charts.
Sales Tax Calculator Calculate sales tax from pre-tax, tax-included, or receipt tax-line amounts with rounding checks, rate comparisons, charts, and exports.
Sallen-Key Filter Calculator Calculate Sallen-Key low-pass, high-pass, or band-pass stages locally with f0, Q, response curves, preferred values, and headroom checks.
SameSite Cookie Policy Checker Check Set-Cookie headers for SameSite, Secure, prefix, scope, and delivery gaps before SSO, payment, or embedded flows fail in production.
Satcom Status Tracker Check satellite TLE freshness, orbit class, readiness, and optional SatNOGS context before using a record for link planning or status triage.
Satellite Pass Tracker Forecast satellite passes from a searched or pasted TLE, set observer location by IP Geolocation, city search, browser GPS, or manual coordinates, tune filters, and export charts or calendar ICS.
Satisfaction With Life Scale (SWLS) Assessment Score the five-item SWLS, see the satisfaction band, and review midpoint drift, anchor statements, answer spread, charts, and shareable evidence.
Savings Goal Calculator Calculate a savings goal timeline or monthly deposit from your balance, return assumption, step-ups, and deadline with charts and warnings.
Schengen 90/180 Day Calculator Calculate Schengen 90/180 stay days, test a proposed trip, and review rolling-window warnings from date ranges or passport stamps.
Schutte Self-Report Emotional Intelligence Test (SSEIT) Score the 33-item SSEIT, review the 33 to 165 total, lane means, reverse-keyed items, charts, and response evidence in your browser.
Scissor Skills Sheet Generator Create scissor skills worksheets with leveled cut paths, guide widths, start-stop cues, hand-turn notes, paste boxes, and repeatable seed versions.
Score Distribution Analyzer Analyze score rows or CSV marks as percentages, with mean, median, quartiles, pass rate, grade bands, outlier flags, and rejected-row checks.
Seating Chart Generator Build a classroom seating chart from a roster, fixed seats, and empty desks, with repeatable shuffles, group balancing, and audit notes.
Secret Pattern Sample Checker Check configs, logs, and support snippets for secret-like keys, masked evidence, entropy cues, provider patterns, and rotation follow-up.
Secure Password Generator Generate a random password in your browser with cryptographic randomness, entropy checks, pattern-aware strength, and compatibility controls.
Secure Shell (SSH) Client Config Editor Edit SSH client config Host blocks, test wildcard matches, review risky defaults, and export generated config with lint and diff checks.
Secure Shell (SSH) Key Fingerprint Checker Check an SSH public key locally, compare SHA256 or MD5 fingerprints, review key strength, and generate known_hosts or SSHFP artifacts.
Secure Shell (SSH) Public Key Converter Convert one SSH public key between OpenSSH, SSH2, and PEM formats, then compare SHA-256 fingerprints and comments before copying.
Secure Shell (SSH) Public Key Extractor Extract an SSH public key from private-key text or public lines, then check fingerprints, bit length, derivation path, and authorized_keys output.
Secure Sockets Layer (SSL) Certificate Converter Convert certificates between PEM, DER, PKCS#7, and PKCS#12 in your browser, with chain details, expiry checks, and key handling notes.
Secure Sockets Layer (SSL) Certificate Decoder Decode PEM, DER, or PKCS#7 certificates in your browser to inspect names, validity dates, fingerprints, key usage, and chain inventory.
Self-Compassion Scale Short Form (SCS-SF) Assessment Score the 12-item SCS-SF for self-compassion, then review the 1-to-5 mean, reverse-scored items, pair cues, and chart exports.
SemVer Bump Required Checker Check release notes or commit lines for the SemVer bump required, compare the planned version, and spot breaking, feature, fix, or neutral signals.
Semaphore Signals Quiz Practice A-Z semaphore letters from flag-position diagrams, replay seeded drills, and review scores, missed answers, and accuracy charts.
Sewing Thread Consumption Calculator Estimate garment thread consumption from stitch-class operation rows, wastage, package length, and thread-group costs before ordering cones.
Shape Tracing Sheet Generator Create shape tracing sheets with presets or custom lists, dotted outlines, color prompts, find-shape practice, guide rows, and ledgers.
Shoe Size Converter Compare foot length or shoe labels across US, UK, EU, JP, MX, CN, KR, and BR shoe sizes with fit allowance and rounding warnings.
Shop Lighting Lumens Calculator Plan shop lighting from room size, task lux, fixture lumens, and loss assumptions with grid count, spacing risk, headroom, and energy cost.
Short Dark Triad (SD3) Assessment Complete the 27-item SD3 self-report in your browser, compare three keyed trait means, and audit reverse scoring and item signals.
Sick, Control, One Stone, Fat, Food (SCOFF) Screen eating-disorder concerns with the five-item SCOFF, see the 0-to-5 score, 2+ cut-point, cue groups, and follow-up notes.
Sight Word Practice Sheet Generator Create sight-word practice sheets from Dolch, Fry, or custom lists with trace-write activities, teacher keys, word ledgers, and home notes.
Significant Figures Calculator Count significant figures from a written number, inspect each digit's role, resolve trailing-zero ambiguity, and preview rounded values with error checks.
Simple Interest Calculator Calculate simple interest from principal, rate, term, and day-count basis, with gross and net maturity totals, payout checkpoints, and an accrual curve.
Sitemap URL Extractor Extract URLs from pasted sitemap XML, text lists, or a public sitemap URL with filters, de-duplication, review ledgers, source sitemap evidence, charts, and exports.
Sleep Debt Calculator Calculate recent sleep debt from a 7- or 14-night log, then compare gross deficit, oversleep credit, recovery days, and bedtime targets.
Sleep Hygiene Gap Checker Check sleep-hygiene gaps across caffeine, screens, schedule, naps, room, and light, then rank a small reset queue for retesting.
Sleep Hygiene Path Planner Route sleep scores, diary efficiency, debt, and safety cautions into a prioritized sleep-hygiene path with a cadence rail, CBT-I ladder, charts, and exports.
Sleep Sound Generator Create a sleep sound mix with noise recipes, safe-volume capping, timer presets, live playback controls, coach notes, and charts.
Sleep Window Adjustment Planner Apply weekly sleep efficiency thresholds to adjust a fixed-wake sleep window, with a threshold strip, guidance table, trajectory chart, and exports.
Slug Generator Turn titles or batch lines into readable slugs, with ASCII or Unicode handling, smart trimming, duplicate suffixes, and paste checks.
Smoke Detector Placement Calculator Plan smoke alarm locations by bedrooms, sleeping areas, and levels, then estimate buy quantity, cost, placement checks, and install notes.
Snapshot Storage Growth Calculator Estimate snapshot reserve capacity from dataset churn, retention, reduction ratio, and headroom, then compare current reserve gaps and stress cases.
Snow Plowing Seasonal Contract Calculator Price a seasonal snow plowing contract from event counts, plow time, deicing scope, reserves, margin targets, and weather scenarios.
Social Interaction Anxiety 6-Item Proxy Screener Review social interaction anxiety with six paraphrased SIAS-6-style items, a 0-to-24 proxy score, 7+ cue context, item drivers, and chart exports.
Sod Pallet Calculator Calculate sod pallets from measured lawn area, supplier coverage, waste, order policy, delivery weight, and same-day installation checks.
Soil Amendment Calculator Calculate compost, lime, sulfur, optional gypsum, bag counts, staging, and costs from bed size, soil targets, texture, and product strength.
Soil Volume Calculator Calculate soil volume for beds and top-ups, then compare bag counts, bulk ticket rounding, delivery weight, and wheelbarrow loads.
Solar Panel Array Size Calculator Estimate solar panel count from monthly kWh, target offset, sun hours, losses, module watts, and roof-area fit checks before comparing quotes.
Solar Payback Period Calculator Calculate when solar bill savings recover your net upfront cost, with incentive, export-credit, degradation, and annual cash-flow checks.
Sourdough Feeding Schedule Calculator Schedule sourdough starter feedings by ratio, hydration, temperature, flour type, and target peak time with ingredient weights and timing windows.
Spelling Test Generator Create a spelling test sheet from a word list with sentence prompts, answer key, teacher script, word ledger, and printable review output.
Sports Scoreboard Tracker Keep a multi-sport scoreboard during live play with preset score buttons, fouls, timeouts, possession, event logs, and score-flow review.
Spray Foam Kit Coverage Calculator Estimate how many spray foam kits to buy from area, target thickness or R-value, label yield, field loss, waste, reserve, and cost checks.
Square Footage Calculator Calculate square footage for rooms, floors, patios, and material orders with shape math, deductions, waste, package rounding, and cost checks.
Stack Trace Signature Analyzer Group pasted stack traces into stable fingerprints, compare frame evidence, and spot recurring failures without sending trace text away.
Stair Stringer Calculator Calculate stair stringers from finished rise, tread run, code profile, board stock, and support spacing with cut checks before cutting.
Standby Power Cost Calculator Estimate yearly standby power cost from measured watts, device rows, usage hours, electric rates, cuttable load, savings, and payback.
Starfield Screensaver Simulator Tune a starfield screensaver with star count, warp, depth, comet, twinkle, fullscreen preview, and flight metrics for smoother space loops.
Static Route Commands Generator Generate static route commands for Linux, Windows, macOS, and network CLIs from route rows, with validation, rollback modes, and priority review.
Steps to Calories Calculator Estimate active calories from steps with weight, step length, pace, terrain, target steps, and uncertainty ranges for walks or runs.
Stimulus Control Steps Planner Build a stimulus-control sleep plan with leave-bed cues, a fixed wake anchor, fallback activity, adherence guidance, and a response chart.
Strength Progression Planner Plan week-by-week strength progression from working load, reps, deload cadence, and rounding, with rule checks, load curve, and exportable briefs.
Strength Standards Calculator Compare your squat, bench, deadlift, or press 1RM against bodyweight standards with recent-set estimates, target deltas, and source notes.
Stud Wall Framing Calculator Estimate stud wall boards, plates, headers, sills, cut lengths, waste, and material cost from wall dimensions, spacing, and openings.
Subdivision Flags Quiz Practice subdivision flags across country and region pools, tune choices or timers, and review scores, timeouts, streaks, and missed flags.
Subfloor Sheets Calculator Estimate subfloor sheet counts from dimensions or measured area, with waste, spare panels, fasteners, adhesive, seam checks, and cost.
Subjective Happiness Scale (SHS) Assessment Assess subjective happiness with the 4-item SHS in your browser, then review the 1-7 mean, reverse-scored item, balance cue, and score arc.
Subnet Planning Suite Plan IPv4 child subnets from a parent CIDR with reserve-aware host fit, ordered demand packing, prefix charts, address math, and exports.
Substitute Teacher Plan Generator Create a substitute teacher packet with schedule blocks, activity directions, routines, safety notes, pacing checks, and leave-behind feedback prompts.
Sump Pump Size Calculator Calculate sump pump size from basin inflow, lift, pipe losses, safety margin, pump-curve fit, and cycle checks before choosing a model.
Survey Questions Generator Draft survey questions from a research goal, audience, topics, and response mix, then review wording, fatigue, and type balance before fielding.
Switchport Config Generator Generate Cisco, NX-OS, or Arista switchport CLI for access or trunk ranges with VLAN validation, DTP notes, and paste-safety review.
Switzerland Rail Service Tracker Watch Swiss station departures or arrivals, filter by destination or line, and compare planned times, expected times, platforms, delays, and route stops.
Syslog Severity Mix Analyzer Analyze syslog and application log samples by severity, flag high error+ share, and rank noisy emitters with chart and export options.
Syslog Storage Calculator Size searchable syslog storage from EPS, message size, retention, compression, index overhead, searchable copies, reserve, and disk headroom checks.
TB/TiB/GB/GiB Converter Convert TB, TiB, GB, and GiB through exact bytes, compare decimal and binary labels, and explain drive-size gaps for reports.
TLS Handshake Load Calculator Estimate TLS handshake CPU load from RPS, connection reuse, full and resumed handshake cost, surge multipliers, core targets, and warnings.
TLS Handshake Trace Trace a live TLS endpoint, then review negotiated protocol, cipher, certificate chain, phase timing, transcript, and JSON evidence.
TLS-RPT Record Validator Validate a TLS-RPT DNS record for a mail domain, review rua destinations and related policy signals, and draft a DNS zone snippet.
TOML Converter Convert TOML into normalized TOML, YAML, JSON, INI, env, and properties output with parse errors, path ledgers, and schema sketches.
Tab-Separated Values (TSV) Converter Convert TSV or delimiter-separated rows into structured tables and exports with header detection, type checks, warnings, and column profiles.
Tabata Workout Timer Build and run a Tabata workout timer with 20/10 presets, slider-tuned intervals, exercise rotation, local cues, timeline chart, and logs.
Table Data Converter Turn pasted table data into clean delimited, Markdown, JSON, or HTML output with header handling, column profiles, and safety notes.
Table Tennis Scoreboard Tracker Track table tennis rallies with game targets, win-by margins, server rotation, deuce status, match score, and point-pressure review.
Tablecloth Size Calculator Calculate tablecloth size from table shape, drop, height, and stock catalogs, with floor-clearance, fit, quantity, and sewing-cut notes.
Tap-Tempo Beats Per Minute (BPM) Calculator Tap a rhythm to estimate quarter-note BPM, translate eighth, dotted-quarter, or half-note pulses, and check confidence, jitter, drift charts, and exports.
Target and Maximum Heart Rate Calculator Calculate target heart-rate bpm from age or a known max HR, compare %Max and Karvonen ranges, and review zones, current HR, and method differences.
Tax Refund Estimator Estimate a U.S. federal refund or balance due from income, credits, withholding, payments, safe-harbor checks, and a refund bridge.
Tax Withholding Calculator Calculate 2026 U.S. federal paycheck withholding, compare your paystub pace with Pub. 15-T, and plan a per-check W-4 adjustment.
Tempo Generator / Metronome Set a metronome practice pulse with tap tempo, meter, subdivisions, swing, accents, ramp blocks, playback, charts, and exports.
Ten-Frame Counting Sheet Generator Generate printable ten-frame counting sheets for 0 to 20 practice with task modes, answer keys, setup ledgers, and a frame-fill chart.
Ten-Item Personality Inventory (TIPI) Assessment Score a 10-item TIPI Big Five profile, review reverse-keyed answers, and inspect trait spread with a radar map, CSV, and DOCX exports.
Tennis Scoreboard Tracker Track tennis points, games, sets, server calls, tiebreaks, advantage or no-ad scoring, match status, and recent score-flow history.
Terminal Installer Simulator Simulate a browser-local installer session with package-manager presets, seeded replay, network jitter, progress traces, and exportable logs.
Terraform Plan Summary Analyzer Review Terraform plan JSON or text before apply, with destructive-change gates, drift signals, output-change checks, and provider impact charts.
Terraform Variable Defaults Checker Review Terraform variable defaults, sensitive fallbacks, type mismatches, nullable behavior, and remediation priorities from pasted variable blocks.
Test Case Generator Turn a feature workflow into manual, Gherkin, or automation-ready test cases with traceable IDs, boundary rows, and review checks.
Test Curve Calculator Curve raw test scores, compare class average and band shifts, and audit caps, rounding, skipped rows, and formula effects before posting grades.
Test Score Calculator Calculate a test score from correct, missed, or earned points, then see the percentage, letter band, next-grade gap, and grading chart.
Test Shard Runtime Calculator Estimate CI test shard wall time from suite size, setup cost, timing coverage, runner capacity, target gaps, and runner-minute cost curves.
Text Diff Comparator Compare original and revised text locally, with file loading, ignore options, unified diff output, change ledgers, warnings, and chart counts.
Text Encryptor & Decryptor Encrypt or decrypt private text in your browser with AES formats, password stretching, integrity checks, portable envelopes, and byte-size evidence.
Text Hash Generator Hash exact UTF-8 text in the browser, compare common digest algorithms, add optional salt rules, and save digest profiles for repeat checks.
Text Sorter Sort pasted text or TXT/CSV lists with natural order, seeded shuffle, cleanup filters, duplicate counts, and paste-ready local output.
Thinset Bag Calculator Calculate how many thinset bags to buy from tile area and trowel coverage, with waste, back-butter, spare-bag, cost, and wet-area checks.
Thread Pool Saturation Calculator Calculate thread pool saturation from active workers, queue depth, arrival rate, task time, wait percentiles, and capacity scenarios.
Tie Down Strap Capacity Calculator Calculate tie-down strap capacity from cargo weight, length, WLL, securement path, blocking, reserve, and minimum-count rules.
Tile Calculator Calculate tile boxes from measured area, tile size, grout joint, waste, carton count, spares, and price with takeoff tables and waste checks.
Tile Grout Bags Calculator Calculate tile grout bags from area, tile size, joint width, depth, density, waste, and bag size, with sensitivity and lot-ordering checks.
Time Calculator Calculate elapsed time, overnight shifts, break deductions, and added or subtracted clock durations with rounding, charts, and exportable ledgers.
Time Zone Meeting Overlap Calculator Find meeting times across IANA time zones, compare strict work-hour overlap with least-pain fallbacks, and export calendar-ready details.
Time-lapse Plan Calculator Plan a time-lapse shoot from interval, clip length, frame count, storage, battery, and exposure gap checks before setting the camera.
Timecode Duration Calculator Calculate frame-accurate timecode duration from in/out labels with drop-frame checks, handle frames, and a copy-ready production sheet.
Tip Calculator Calculate a tip from subtotal, tax, service charges, and split rules, then review receipt checks, rounding notes, charts, and share-ready totals.
Tire Replacement Cost Calculator Estimate out-the-door tire replacement cost with tires, install fees, tax, add-ons, rebates, mileage value, and shop-quote variance.
Tire Size Comparison Calculator Compare original and replacement tire sizes for diameter change, speedometer error, ride height, clearance checks, and review-band charts.
Trace CNAME Alias Chain Trace a hostname's CNAME chain across public DNS views, compare terminal records, and catch suffix mismatches, loops, hop caps, or resolver drift.
Traceroute Hops Analyzer Analyze pasted traceroute, tracert, or MTR output into hop evidence, latency-step findings, loss checks, charts, and shareable exports.
Tracing Worksheet Generator Build tracing worksheets for names, letters, numbers, shapes, and pre-writing strokes with guide lines, formation cues, page estimates, and exports.
Trailer Payload Capacity Calculator Calculate trailer payload margin from GVWR, empty weight, cargo, fluids, tongue weight, axle and tire ratings, with weakest-limit checks.
Trailer Tongue Weight Calculator Calculate trailer tongue weight from a scale reading or target percent, compare it with the selected band, and check hitch, payload, and load-shift notes.
Transformer Calculator Calculate transformer turns ratio, secondary turns, full-load current, and impedance ratio from RMS voltages, VA rating, phase, and winding turns.
Translation Quote Calculator Build a translation quote from source words, language pair, CAT leverage, deadline pressure, format fees, minimums, margin, and client-ready copy.
Travel Per Diem Calculator Calculate travel per diem from trip dates, lodging rules, M&IE rates, first/last-day proration, provided meals, caps, and daily tables.
UCLA Loneliness Scale-20 (ULS-20) Assessment Score the 20-item UCLA Loneliness Scale, check reverse-scored support items, and review the 20 to 80 total with item-level guidance and exports.
UCLA Loneliness Scale-8 (ULS-8) Assessment Complete the ULS-8 loneliness assessment, reverse-score two anchor items, and review total, transformed score, top items, and follow-up cues.
UCLA Loneliness Short Check Check three UCLA-derived loneliness cues, add the 3 to 9 score, compare the peak cue and spread, and keep the result framed as a brief self-check.
UK Take-Home Pay Calculator Calculate UK take-home pay for 2026/27 with PAYE, NI, pension treatment, student loans, and per-period ledgers for salary offers.
UPS Runtime Calculator Estimate UPS battery runtime from load, watt-hours, efficiency, reserve, and battery health, with shutdown margin and rating checks.
URL Blacklist Status Lookup Check a URL or host against Safe Browsing, SURBL, and local string signals, then read scope, coverage, and follow-up guidance.
URL Encode and Decode Tool Encode or decode URL text by context, inspect percent escapes, plus-space handling, query pairs, and round-trip warnings in the browser.
URL Parser Parse a URL or query string locally into components, host-label evidence, query rows, duplicate and encoding notes, masked sensitive values, a rebuilt review URL, charts, and exports.
UTM URL Generator Build a campaign URL with required UTM labels, GA4 channel hints, naming checks, existing-parameter handling, and clean review exports.
Unicode Character Lookup Inspect a character, grapheme, code point, or escape, then compare Unicode names, UTF bytes, normalization changes, and hidden-text warnings.
Uniform Resource Locator (URL) Decoder Decode percent-encoded URLs or text, inspect query parameters and character details, and clean trackers or nested escapes before sharing.
Uniform Resource Locator (URL) Encoder Percent-encode URL components, full links, form values, or paths with character maps, strict escapes, and QR-ready handoff output.
Unit Converter Convert measurements across 21 unit categories with base-unit formulas, precision controls, equivalent tables, warnings, and range charts.
Unit Price Calculator Compare two package prices on a fair per-unit basis, including multipacks, shared fees, waste assumptions, and break-even shelf limits.
Universally Unique Identifier (UUID) Decoder Decode one UUID into version-aware structure, canonical forms, timestamp evidence, bit lanes, charted allocation, and JSON exports.
Universally Unique Identifier (UUID) Generator Generate UUIDs for random, time-ordered, and name-based IDs with namespace validation, format variants, anatomy tables, and history exports.
Uptime Calculator Calculate uptime budgets from SLA targets, downtime, maintenance policy, and elapsed period with burn pace, target status, charts, and exports.
User Story Generator Draft a user story card from role, goal, benefit, and acceptance checks with criteria rows, boundary coverage, and readiness signals.
User-Agent Parser Parse a User-Agent string or header block into browser, OS, device, crawler, token, Client Hints, and compatibility evidence rows.
VAT Calculator Calculate VAT from a net price, gross total, or VAT-only amount, with rounding checks, rate-sweep charts, and receipt-ready totals.
VLAN Capacity Calculator Plan VLAN ID capacity from reserved and existing IDs, then test new segment demand, IPv4 host fit, allocation order, and exportable warnings.
VLAN Config Consistency Checker Check VLAN lists and switch evidence for trunk drift, native VLAN mismatches, reserved IDs, inactive VLANs, and VLAN 1 policy findings.
VLAN Migration Planner Plan VLAN port moves from pasted rows, tune wave timing with sliders, flag native VLAN and window risks, and export runbook tables.
VM Migration Time Calculator Estimate VM migration time from memory, disk payload, bandwidth, dirty-page churn, and cutover limits with downtime and convergence checks.
VPN Tunnel Capacity Calculator Estimate VPN tunnel user capacity from line rate, packet overhead, peak demand, gateway caps, and MTU limits with tables and a load curve.
VSWR Return Loss Converter Convert VSWR, return loss, reflection coefficient, reflected power, and mismatch loss for RF bench, antenna, and transmitter checks.
Video Bitrate Storage Calculator Estimate video storage from bitrate, duration, streams, copies, and headroom, with drive counts, shoot checks, and codec comparisons.
Video Call Sheet Generator Build a video call sheet from schedule and crew rows, then catch call-time, meal, move, safety, and wrap issues before handoff.
Virtual Flowers Generator Create a virtual bouquet card with custom flowers, colors, message text, signed share links, exportable images, and a bloom mix chart.
Virtual Machine Storage Calculator Plan VM datastore capacity from disk use, growth, snapshots, swap, reserves, and protection policy with raw capacity and runway checks.
Virtualization Host Capacity Calculator Plan safe VM capacity for a virtualization cluster with CPU, memory, N+ failover, maintenance reserve, growth runway, and large-VM checks.
Visual IPv4 Subnet Calculator / Splitter Plan IPv4 subnet layouts by splitting and joining CIDR leaf blocks, then check host ranges, broadcast values, and size maps before handoff.
Visual Schedule Cards Generator Build printable visual schedule cards from routine rows, picture cues, and optional times with print checks, a card ledger, and a flow map.
Vocabulary Matching Sheet Generator Create vocabulary matching worksheets from term-definition pairs with seeded shuffling, distractors, answer keys, print checks, and parse notes.
Volleyball Scoreboard Tracker Track volleyball rallies with set targets, serve changes, timeout counts, set commits, match-point cues, and rally momentum review.
Voltage Divider Calculator Calculate loaded voltage-divider output, solve R1 or R2 from a target voltage, and check load sag, current, power, tolerance, and E-series fit.
Vulnerability Remediation SLA Calculator Calculate vulnerability remediation SLA due dates from CSV rows, flag overdue or due-soon findings, and build owner-ready queues.
WAN Latency Calculator Calculate WAN round-trip latency from fiber distance, hops, queues, jitter, and app round trips, with target fit and route headroom.
WHO-5 Well-Being Assessment Score WHO-5 well-being for the last two weeks with raw and percent totals, the published follow-up cue, item patterns, and charted review.
WHOIS / RDAP Lookup Check domain registration with RDAP-first lookup, WHOIS fallback, lifecycle dates, nameservers, status, contacts, registrar details, and raw JSON.
WPDS Historical Proxy Assessment Review a 24-item WPDS historical proxy, compare five cue lanes, and see which yes/no answers drive the flag count without treating it as a diagnosis.
WWN and NAA Identifier Lookup Extract WWN or NAA identifiers from SAN text, decode NAA family and company ID hints, rank candidates, and plan the next checks.
Waist to Height Ratio Calculator Calculate waist-to-height ratio from mixed units, compare NICE or legacy bands, and turn half-height cutoffs into waist targets with cautions.
Waist to Hip Ratio Calculator Calculate waist-to-hip ratio from waist and hip measurements, compare sex-specific or custom bands, and see whether tape uncertainty could change results.
Wallpaper Calculator Estimate wallpaper rolls from wall dimensions and roll labels, with repeat matching, opening deductions, waste guidance, spare rolls, and cost totals.
Water Heater Size Calculator Size a storage or tankless water heater from peak-hour use, fixture flow, temperature rise, and reserve with FHR, BTU, kW, and fit-map checks.
Water Intake Calculator Plan a daily drink target from total-water references, body weight, climate, exercise, sweat data, serving counts, and safety flags.
Water Softener Size Calculator Size a residential water softener from hardness, iron, softened-water use, reserve, salt dose, regeneration interval, and peak-flow fit.
Water Well Pump Size Calculator Size a residential well pump by GPM and total dynamic head, then check well yield, tank drawdown, curve fit, and candidate pump flow.
Web Server Detector Detect visible web server or edge software from HTTP headers, redirects, confidence scores, candidate clues, and follow-up playbook actions.
WebSocket Connection Capacity Calculator Size a WebSocket pool from sockets, memory, bandwidth, descriptors, and N+ reserve, with bottleneck rows and node gaps.
Wedding Budget Breakdown Calculator Plan a wedding budget with category targets, modeled quotes, reserve-gap warnings, payment forecasts, and per-guest committed cost.
Wedding Invitation Card Generator Design a wedding invitation card with live preview, delivery-target proofing, RSVP QR handoff, signed sharing, wording tables, production checks, and PNG or PDF exports.
Weekly Workout Schedule Planner Build a weekly workout plan around goals, training days, equipment, and recovery, with load estimates, audit checks, charts, and calendar output.
Weight Loss Calculator Estimate a weight-change calorie runway from body stats, activity, goal weight, and schedule, with floor limits, pace warnings, BMI context, and milestones.
Weight-for-Age Percentile Calculator Plot a child's weight-for-age percentile and z-score using WHO or CDC references, with corrected-age handling, alert bands, and growth-lane targets.
Weight-for-Length Percentile Calculator Compare weight-for-length percentile against WHO and CDC references, with recumbent-length adjustment, source-fit notes, alert bands, and lane targets.
Weighted Grade Calculator Calculate weighted course grades from percentage weights or points, including dropped rows, upcoming work, target averages, grade bands, and weight audits.
Weighted Rubric Score Calculator Calculate a weighted rubric score from criteria, weights, grade bands, and point totals, with weight-audit notes and contribution checks.
Wget Command Generator Build a wget command for downloads, API fetches, FTP pulls, or site mirrors with shell-aware quoting, imports, and risky-option warnings.
What Is My Browser Check your current browser, storage, graphics, privacy, and compatibility signals so support teams can reproduce issues without guesswork.
What Is My Internet Protocol (IP) Address? Check your public IP address, compare IPv4 and IPv6 visibility, and review ASN, location, reverse-DNS, and source agreement clues.
What Is My Screen Resolution Check your screen, viewport, DPR, breakpoint lane, and capture size with density estimates when you know the display diagonal.
Whole-House Water Filter Size Calculator Size a whole-house water filter from peak fixture flow, pressure drop, water loading, service-flow headroom, and cartridge replacement timing.
Wi-Fi Channel Plan Calculator Plan Wi-Fi channel assignments for 2.4, 5, or 6 GHz layouts, compare reuse pressure, and export AP channel tables, charts, and JSON.
Wifi AP Coverage Capacity Calculator Estimate Wi-Fi AP count from floor area, client load, traffic demand, AP class, and reserve, with coverage, client, and throughput drivers.
Window Cleaning Quote Calculator Calculate a window cleaning quote from panes, scope, access, screens, tracks, restoration work, labor time, minimum charge, and margin floor.
Window U-value Calculator Compare current and proposed window U-values, total area, heat flow, R-value, and seasonal conduction savings with target and SHGC cautions.
Wire Gauge Calculator Calculate an AWG wire size from current, run length, voltage, material, and drop limit, with ampacity checks and voltage-drop maps.
WireGuard Config Generator Generate WireGuard server, append-only peer blocks, and client configs with a topology preview, route ledger, and placeholder-key review.
Word Counter Count words in drafts and transcripts with local totals, readability scores, repeated phrases, frequency charts, and exportable evidence.
Word Scramble Generator Create a word scramble worksheet from words and hints with repeatable seeds, difficulty modes, word banks, answer keys, and source audits.
Word Search Generator Generate a word search puzzle from A-Z words with seeded grids, direction controls, play checking, answer keys, and placement reports.
Work and Power Calculator Calculate mechanical work and average power from force, distance, angle, and time, with sign checks, unit conversions, and an angle curve.
Workout Rounds Tracker Track AMRAP, for-time, or interval rounds from pasted or imported workout logs, with reps, pace, RPE, and short-round audit flags.
Workout Volume Calculator Calculate workout volume from training rows, with bodyweight load estimates, hard-set projections, muscle-group balance, and chart exports.
World Health Organization Quality of Life (WHOQOL-BREF) Assess WHOQOL-BREF quality of life, compare four 0-100 domain scores, and review lower-scoring items, support areas, and shareable results.
XLSX to CSV Converter Convert one Excel workbook sheet to CSV in your browser with sheet selection, delimiter choices, formula review, hidden-row checks, and downloads.
XML Diff Comparator Compare two XML documents locally with parser diagnostics, keyed path matching, namespace-aware values, patch-operation rows, XML change scripts, chart counts, and exports.
XPath Tester Test XPath expressions against XML or HTML locally, inspect typed node and scalar matches, namespace evidence, match-shape charts, syntax notes, and runtime snippets.
YAML Converter Convert YAML into JSON, env, INI, properties, and path tables while checking document count, schema types, and scalar-only exports.
YAML Formatter Format YAML for review or diff handoffs, catching comments, directives, tabs, aliases, path changes, and parse errors before applying output.
YAML Validator Validate YAML text or files in your browser, compare schema profiles, catch duplicate keys and parser errors, and inspect paths plus parsed JSON.
ZFS Capacity Calculator Calculate ZFS planned usable capacity from vdev layout, disk size, slop, reserve, RAID-Z padding, and target-fit alternatives.
cURL Command Generator Build a cURL command from method, URL, headers, auth, body, and transfer flags, with shell-aware quoting, import parsing, and warnings.
chmod Calculator Calculate chmod modes and shell commands from octal or symbolic permissions, compare safe baselines, and flag risky recursive or world-write settings.
dnsmasq DHCP Config Generator Build a dnsmasq DHCP scope config with pool, router, DNS, reservations, PXE/TFTP options, and validation notes before rollout.
iptables Rule Generator Generate an iptables or ip6tables command from CIDRs, ports, chains, backend profile, and strict review checks before applying firewall changes.
npm Audit Summary Analyzer Summarize npm audit JSON or CI text into a release gate, severity ledger, fix-pressure queue, charts, and local exports for handoff.
systemd Unit Generator Build a systemd service unit from command, user, restart, dependency, and hardening choices with directive review and install checks.

Simplified Tools

Tools

Tags