Simplified Tools

Tools

1069 tools

List of available tools
Blue-Green Deployment Planner Plan a blue-green release with traffic waves, bake windows, capacity checks, rollback triggers, command drafts, and an exposure curve for review.
CSS Border Radius Generator Generate border-radius CSS from corner values, slash syntax, and preview dimensions with fit warnings, Tailwind output, and copy-ready code.
CSS Box Shadow Generator Build a CSS box-shadow stack with editable layers, live surface previews, CSS/SCSS output, and a ledger for checking each shadow.
CSS Flexbox Generator Generate flexbox CSS for responsive rows, columns, wrapping, gaps, and child sizing with a live preview, property notes, and starter HTML.
CSS Grid Generator Generate CSS Grid layout rules from a selector, strategy, gaps, and alignment, with a live preview, fit projections, scaffold, and audit ledgers.
Canary Deployment Planner Plan a canary rollout from traffic steps, bake windows, guardrail limits, and rollback posture with schedule, risk, chart, and export outputs.
JSON Schema Generator Generate a draft-aware JSON Schema from sample JSON in your browser, with required-field choices, nullable handling, and review ledgers.
NTP Config Generator Build NTP configs for chrony, ntpd, systemd-timesyncd, and Cisco devices with source parsing, access checks, fallback warnings, and copy-ready output.
OpenTelemetry Collector Config Generator Generate OpenTelemetry Collector YAML for OTLP traces, metrics, and logs with pipeline audits, memory guards, batch settings, and endpoint checks.
README Generator Draft a README from project details, setup commands, usage examples, and license choices with readiness checks and follow-up repository tasks.
Route Table Longest Match Checker Check which IPv4 or IPv6 route wins for a destination, with longest-prefix ranking, equal-prefix policy choices, and host-bit warnings.
Secrets Rotation Planner Plan a secret rotation without pasting the credential, with staged cutover timing, validation gates, risk scoring, and change-record exports.
Sitemap XML Generator Generate sitemap XML from same-host URLs or paths, with lastmod handling, crawl-hint controls, dedupe review, and protocol limit checks.
Test Data Generator Generate repeatable synthetic test rows from field recipes and seeds, then export CSV, JSON, NDJSON, or SQL with recipe quality checks.
Web App Manifest Generator Generate a web app manifest with install markup, icon asset checks, and warnings for launch scope, display mode, colors, and shortcuts.
.env File Generator Turn key-value rows into reviewed .env and .env.example files with quote safety checks, duplicate-key warnings, and masked secret previews.
.gitignore Generator Draft a repository-ready .gitignore from stack, OS, editor, secret, and exception choices, with warnings for broad or duplicate patterns.
.gitignore Pattern Coverage Checker Check whether .gitignore rules protect generated or sensitive paths, with in-browser coverage metrics for negations, tracked files, and gaps.
.htaccess Generator Generate an Apache .htaccess draft from presets and ordered rule sections, then review warnings, counts, and saved JSON before staging changes.
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 7-minute workout timer with preset 12-move circuits, interval sliders, browser cues, plan metrics, a load chart, and JSON export.
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 ACME DNS-01 readiness with TXT token matching, CNAME or NS delegation checks, resolver comparison, and cache-aware retry guidance.
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 parsed movement loops, target pace checks, live score logging, charts, and exportable session records.
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 in your browser with public IDs, entropy checks, check segments, storage hashes, and sensitive-batch warnings.
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 Draft acceptance criteria from a story, actor, outcomes, behaviors, and edge cases with Gherkin, review checks, and exportable ledgers.
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 Check a public page for ad-network tags, ads.txt seller alignment, confidence scores, fetch warnings, charts, and prioritized follow-up actions.
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 Find IATA and ICAO airport codes by code, city, country, or airport name, with match evidence, source checks, and nearby coordinate context.
Alcohol Screener Comparator Compare AUDIT-C, AUDIT-10, and CAGE with route scores, cutoff context, coverage charts, and follow-up notes before an alcohol review.
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 repeatable shuffles, challenge distractors, answer keys, and print exports.
Alternative DCV Checker Check alternative DCV proofs before a certificate order retry, comparing DNS, CNAME, HTTP, HTTPS, CSR hashes, tokens, and resolver 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 Generate 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 vhost draft for static, PHP-FPM, or proxy sites, with TLS settings, required modules, warnings, 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 directly from your browser, import cURL commands, inspect CORS-blocked failures, and save clean response traces.
Aquarium Screensaver Simulator Simulate a browser aquarium screensaver with live fish, bubbles, lighting, fullscreen preview, FPS metrics, and director cues 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 Look up NANP area codes by code, phone number, or place with status, overlay details, dialing plans, and caller-location caveats.
Arithmetic Practice Generator Generate arithmetic practice sheets from operation mixes, number ranges, and replay seeds, with printable pages, answer keys, setup notes, and exports.
AsciiMath Editor Edit AsciiMath with a live equation preview, conversion audit, function counts, and reusable LaTeX, MathML, image, PDF, and data outputs.
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, with date/session columns, duplicate-name warnings, and downloadable handoff files.
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, then compare routing visibility, prefixes, RDAP contacts, and PeeringDB clues in one focused report.
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 for wrong origins, blocked ASNs, regex misses, long paths, and prepend watch findings before policy changes.
BGP Prefix List Generator Generate BGP prefix-list configuration from CIDR rows, with Cisco, Arista, FRR, SONiC, and Junos syntax plus shadowing 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 PEM certificate checks, then review gate scores and fix 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 a GFS backup rotation from full and incremental sizes, then compare net storage, raw capacity, retention horizon, and audit warnings.
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 Create Code 128, EAN-13, UPC-A, or Code 39 barcode artwork with check-digit handling, quiet-zone warnings, and label-fit guidance.
Base64 Encoder and Decoder Encode or decode Base64 text and files in your browser with URL-safe output, padding repair, byte inspection, and Data URL support.
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 Build beginning-sound worksheets from a word list, review inferred sounds and focus-bank warnings, then print student sheets with answer keys and charts.
Behavior Reward Chart Generator Build a positive behavior reward chart with observable goals, age-fit space checks, coaching notes, and printable sticker or token layouts.
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 assessments by item budget, trait detail, source basis, and goal to choose a domain, facet, or aspect route.
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 Create an invoice or purchase order draft from item rows and tax, then check ledger totals, copy the text, or export JSON for handoff.
Binary Decimal Hex Converter Convert an integer between binary, decimal, hex, octal, and Base36 while checking signed widths, byte order, bit fields, and wrap.
Bingo Card Generator Build printable bingo cards from your own prompts, check whether the board has enough unique items, and export seeded cards with caller records.
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 sender IP against DNSBL/RBL lists, separate real listings from resolver warnings, and export 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 around your goal, time, level, 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 Plan and run boxing-style training rounds with rest, warnings, live bell cues, round-load charts, session logs, and cue-sheet exports.
Boxing Scoreboard Tracker Track a boxing scorecard with 10-point round buttons, referee warnings, point deductions, score-chart exports, and an event ledger.
Braille Alphabet Quiz Practice visual Braille letters and numbers with seeded multiple-choice drills, missed-answer review, downloadable results, 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 paced breathing session with custom inhale, hold, and exhale timing, live ring cues, phase charts, timeline exports, and browser cue options.
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 tracker-ready Markdown, triage fields, JSON, and a reproducibility checklist with severity and privacy review notes.
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 with CNAME and parent lookups, wildcard checks, issuer findings, DNS evidence, and exportable reports.
CBT-I Sleep Diary Tracker Track CBT-I sleep diary nights with sleep efficiency, wake drift, trend charts, locally saved rows, and review prompts for CBT-I check-ins.
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 broad ranges, sensitive ports, stale review dates, missing owners, and overlaps with scored triage evidence.
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 for wildcard origins, credentials, Vary, exposed-header, and private-network risks with scored findings.
CPS Test Measure clicks per second in your browser with timed target runs, goal checks, accuracy tracking, consistency scoring, local history, and pace charts.
CSP Header Generator Draft a Content Security Policy header with nonce, hash, or allowlist script controls, reporting headers, directive review, and rollout warnings.
CSP Header Policy Checker Check a Content-Security-Policy header for risky script rules, missing baseline directives, reporting gaps, and rollout fixes before enforcement.
CSS Gradient Generator Generate CSS gradients with live geometry, draggable color stops, modern color-space choices, syntax warnings, and copy-ready CSS output.
CSS Minifier Minify CSS locally, preserve needed syntax, compare byte savings, and review parser, comment, URL, browser-target, and source-map warnings.
CVC Word Practice Sheet Generator Generate printable CVC word practice sheets from short-vowel lists, with family filters, sound boxes, answer keys, and review for rejected words.
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 Build an import-ready ICS calendar file with escaped event text, timezone-aware timing choices, reminders, compatibility checks, and downloads.
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, threshold timing, lead time, and ranked options with charts and approval-ready 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 headings, labels, filenames, and identifiers into 13 case styles with line-by-line conversion, acronym control, and accent-folded slugs.
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 expiries from CSV rows in your browser, ranking urgent renewals, owner gaps, manual-renewal risk, and public validity findings.
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 in your browser, check SAN coverage and key strength, and review signature, fingerprint, and issuance-readiness notes.
Certificate Signing Request (CSR) Generator Generate a CSR and RSA private key in your browser, review SANs and fingerprints, and export PEM plus OpenSSL guidance without sending keys.
Certificate Transparency Checker Check a TLS certificate fingerprint against public CT data, compare issuer and hostname evidence, and spot revocation or reporting clues.
Change Risk Assessment Reporter Assess IT change risk from impact, likelihood, readiness, disruption, and evidence, then produce a residual-risk report with gates and chart.
Changelog Generator Draft a changelog from notes, Markdown sections, or Conventional Commit subjects with Keep a Changelog grouping, SemVer cues, and copy-ready Markdown.
Checklist and Log Generator Turn item lines into a checklist, to-do list, or reading log with a ready draft, review tables, and reusable handoff exports.
Chess Clock Timer Run a two-player chess clock in your browser with Fischer, Bronstein, delay, and sudden-death modes plus move logs and balance charts.
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 Build a preschool circle time routine from age, group size, theme, and materials with age-fit warnings, block timing, rhythm checks, and exports.
Circuit Training Timer Plan a circuit training timer with named stations, work and transition timing, live phase cues, coaching checks, charts, and exportable run sheets.
Cisco ACL Generator Generate Cisco IPv4 ACL commands from flow rows with wildcard conversion, sequence planning, safety review tables, and platform syntax checks.
Cisco Interface Config Generator Generate Cisco interface config for routed, access, or trunk ports with VLAN checks, syntax profiles, command audit, and copy-ready output.
Citation Generator Draft citations for web, book, article, legal, media, dataset, and AI sources with style-specific entries, citation forms, and review notes.
Classroom Resource Pack Generator Generate classroom resource packs from grade, topic, objectives, time, materials, and support notes with draft text and teacher handoff checks.
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 live hit target, fixed step size, corrections, session peak tracking, and exportable activity rows for handoff.
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-config YAML for static VM interfaces with CIDR addresses, routes, DNS, MAC matching, and validation warnings.
Cloze Worksheet Generator Turn a reading passage into a cloze worksheet with target blanks, a shuffled word bank, answer key, teacher checks, and exports.
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 target cup size, ratio, bloom, and retained water, then get dose, pour timing, TDS checks, and adjustment notes.
Coffee Brew Suite Plan pour-over, French press, espresso, moka, and cold brew recipes with dose math, brew schedules, strength charts, and dial-in cues.
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 a coffee bag's roast-date freshness window with brew method, grind, storage, exposure warnings, use-pace checks, 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 in your browser, then review streaks, expectation gaps, charts, ledger rows, and exports from one recorded session.
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 Generate a color palette from one HEX color, tune harmony, saturation, and lightness, then check contrast before copying CSS tokens or JSON.
Comma-Separated Values (CSV) Converter Convert CSV-like text into previews, profiles, and reusable exports in your browser while checking headers, delimiters, types, and row warnings.
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 a crop list for companion planting conflicts, useful pair notes, family repeats, water or shade issues, and confidence cues.
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 text, spot changed, missing, extra, and priority drift, and build an exportable remediation ledger.
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, find format issues, and map valid changes to major, minor, patch, or no release impact.
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 Build count-and-color worksheets for 0 to 20 with printable object rows, color plans, answer keys, repeatable mixes, and a count-load chart.
Countdown Timer Count down to a deadline across local, UTC, offset, or IANA zones with buffer minutes, reminder milestones, progress, and elapsed-time output.
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 region or world pool, replay seeded quizzes, and review missed answers with score percentages and an accuracy chart.
Country Information Lookup Find a country by name, ISO code, calling code, currency, capital, or region, then compare profile facts, map links, and source status.
Country Take-Home Pay Comparator Compare country salary offers after employee tax, payroll contributions, exchange rates, and cost indexes with source notes and buying-power 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 payment card numbers with Luhn checks, custom BIN/IIN options, seeded batches, optional CVV or expiry, and prefix reports.
Credit Card Number Validator Check payment-card test numbers in your browser with Luhn, issuer-length review, batch traces, charts, and PAN-handling cautions.
Cricket Scoreboard Tracker Score a cricket innings ball by ball, handling legal balls, extras, wickets, chase targets, run rates, projections, and a scoring worm.
Cron Expression Parser Parse a Unix cron expression locally, expand the five fields, preview upcoming runs, and flag timezone, macro, day-rule, or dialect risks.
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 crontab entries for user or system files from presets, pasted lines, or manual fields, with syntax checks, warnings, and install notes.
Crop Rotation Planner Plan a bed-by-bed crop rotation, flag same-family disease conflicts, balance heavy feeders and legumes, and project future seasons with 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 custom crosswords from answer-clue lists, compare grid fit and crossings, then export printable puzzles, answer keys, and clue tables.
Current Time Check your browser's current time as local or UTC, lock one timestamp, and compare ISO, Unix, offset, DST, and day-boundary clues.
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 or TLS services, verify owner-name routing, DNSSEC AD evidence, digest matches, and readiness issues.
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 Generate a DKIM DNS TXT record from selector, domain, and public key input, with key checks, split-string guidance, and publish-ready DNS fields.
DKIM Validation Report Check a DKIM selector for a signing domain, review TXT publication, key strength, testing flags, and resolver evidence before troubleshooting mail authentication.
DMARC DNS Record Generator Build a DMARC TXT record for a domain with owner labels, report URIs, alignment choices, authorization notes, and rollout warnings.
DMARC Validation Report Check a domain's DMARC TXT record, policy tags, alignment modes, report destinations, rollout signals, and control scores using public 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 public DNS records with resolver snapshots, posture notes, TTL tiers, latency charts, and copyable reports for migration checks.
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, retry timing, and validation warnings.
DNS Glue & Delegation Check Check DNS glue and delegation for a domain, flag risky nameserver address gaps, compare public resolver views, and export repair evidence.
DNS Propagation Checker Check DNS propagation across public resolvers, compare a planned DNS answer, and review TTL, DNSSEC, ECS, latency, and failure clues.
DNS Record Enumerator Enumerate public DNS records for a domain, hostname, URL, email domain, or IP with resolver evidence, mail checks, DNSSEC clues, and hardening flags.
DNS Record Lookup Look up DNS records for a domain, host, or IP through Google or Cloudflare DoH with TTL charts, DNSSEC flags, 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 whether a DNS wildcard answers random names, compare public resolver views, and spot branch or cache clues before changing records.
DNS Zone File Generator Build a DNS zone file draft from SOA, NS, MX, TXT, DNSSEC, and host records with TTL policy checks, a record ledger, and lint-ready text.
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 setup with trust-chain evidence, signature timing, resolver AD comparison, and exportable pass/fail reports.
DOCX Converter Convert a DOCX in your browser into clean HTML, Markdown, text, and audit-friendly exports with package checks, warnings, 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 Build a disaster recovery runbook from RTO, RPO, owners, dependencies, recovery steps, validation evidence, and readiness gates for review.
Data Transfer Rate Converter Convert a data transfer rate between bit and byte units, model overhead, and check payload ETAs, window fit, 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-aware SQL, build estimates, lock and replica-lag guardrails, risk scoring, and rollback notes.
Database Migration Risk Checker Check SQL migration risk before release with static scoring for destructive DDL, blocking indexes, large-table backfills, and rollout notes.
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 Build a controlled decodable reading passage from a phonics focus, then check word coverage, review words, questions, and teacher notes.
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 license evidence against allowed, review, and denied policies with SPDX expression triage, scope filters, risk scores, 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, estimate advantage, reroll, exploding, and target odds, and review totals with traces, charts, and session logs.
Diceware Passphrase Generator Create a Diceware passphrase in your browser from EFF long-list rolls, then review entropy, manual dice keys, site policy checks, and roll evidence.
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, compare GET and POST replay data, tune EDNS and DNSSEC flags, and decode live resolver replies.
Docker Compose Generator Build Compose YAML for one service from image or build settings, then review ports, secrets, healthchecks, networks, volumes, and deploy hints.
Docker Compose Healthchecks Checker Check Docker Compose healthchecks for missing probes, weak timing, readiness blockers, restart gaps, and role-based coverage before handoff.
Dockerfile Generator Build a Dockerfile and .dockerignore for Node.js, Python, Go, or Java services with cache mounts, health checks, and hardening warnings.
Dockerfile Security Basics Checker Check a Dockerfile for risky build and runtime defaults, with weighted findings for base images, secrets, users, package hygiene, and release gates.
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 Remove repeated lines from pasted text or a local text file, tune case and whitespace matching, and audit kept rows with metrics and a 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 Check EDNS Client Subnet behavior for a DNS name by comparing hinted and control DoH lookups, echoed cache scope, answer drift, and resolver evidence.
EDNS Options Inspector Inspect a domain's EDNS OPT behavior through public DoH resolvers with DNSSEC, NSID, ECS, padding, packet sections, and replay evidence.
EMOM Workout Timer Plan and run EMOM workouts with minute targets, rest-buffer warnings, live cues, finish logging, charted pacing, and structured exports.
ENV Converter Convert .env files into YAML, JSON, runtime env, INI, and properties output while checking parsed lines, expansion gaps, and secret-like values.
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 printable early math worksheets for counting, ten frames, missing numbers, patterns, and shape fractions with answer keys and skill charts.
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 Build an email signature with rendered preview, HTML and plain-text output, link normalization, width limits, and compatibility checks.
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 Build a run or ride fueling plan with carb, fluid, sodium, bottle, gel, and reminder targets based on duration, effort, and sweat rate.
Environment Variable Inventory Checker Check environment variables against a required list and get redacted findings for missing, blank, duplicate, placeholder, and secret-like entries.
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 Unix epoch seconds, milliseconds, and wall-clock datetimes into UTC, selected-zone timestamps, date parts, and year-progress checks.
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 espresso shots from dose, ratio, yield, time, pressure, and temperature, then log pulls against flow maps 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 Build an event run sheet from session rows or CSV, catch overlaps and short handoffs, and export schedules, timelines, and calendar files.
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 Inspect image EXIF metadata locally, flag GPS and serial privacy risks, and export a cleaned copy with JPEG edits when supported.
Expense Policy Checker Check expense rows against receipt rules, category caps, mileage allowances, duplicate patterns, and blocked categories with review-ready flags.
Extensible Markup Language (XML) Converter Convert XML in your browser into JSON, JSON Lines, tables, SQL inserts, and formatted XML with record-path checks and schema clues.
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, favicon.ico, HTML links, and manifest icons from one image with local processing, size checks, and previews.
Feature Flag Cleanup Checker Audit feature flag inventories for stale, expired, ownerless, dependency-blocked, and code-referenced flags with a prioritized 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 in your browser with AES-GCM, Argon2id or PBKDF2 settings, recovery metadata, and downloadable audit details.
File Hash Generator Hash a local file in your browser, compare MD5, SHA, SHA-3, or RIPEMD-160 digests, and keep a session ledger with salt 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 estimate usable capacity, allocation slack, and the first common storage tier.
File to PDF Converter Convert images, Markdown, HTML, and text to PDF in your browser, with layout warnings, local file preflight, and review exports.
Filebeat Grok Pattern Generator Generate a Filebeat Grok pattern from one sample log line, with ECS field mapping, sample-match coverage, and optional ingest pipeline JSON.
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 Find Finnish AIS vessel reports by MMSI, IMO, callsign, name, type, or radius, then review identity, motion, signal checks, and maps.
Fireplace Screensaver Simulator Tune a fireplace screensaver in your browser with live flames, embers, smoke, fullscreen preview, FPS metrics, notes, and scene exports.
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 risk scoring, audit findings, object plans, platform handoff notes, and scope heatmaps.
Firewall Rule Review Report Review firewall rule inventories for stale, broad, expired, ownerless, or privileged access and produce an evidence-backed cleanup queue.
Firewall Shadow Rule Checker Find shadowed firewall rules in ordered ACL exports, compare full and partial overlaps, flag object warnings, and prioritize cleanup work.
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 Create printable flashcard sheets from pasted or imported pairs, with duplex alignment checks, seeded shuffles, cut guides, and parse logs.
Flight Delay Tracker Track a flight by number and departure date, then compare provider or sample status, delay minutes, route matches, and timeline details.
Flight Emissions Tracker Estimate flight CO2e from airport legs or manual distances, with cabin class, SAF, radiative forcing, offset cost, and leg audit details.
Flight Tracker Track an aircraft by callsign or ICAO hex, compare OpenSky freshness and position clues, and review map, chart, and audit details.
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 seeded problem sets, worked answer keys, duplicate warnings, and print-ready classroom 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 fuel efficiency between MPG (US), L/100 km, and km/L with direction cues, unusual-value warnings, rounded equivalents, and charted sensitivity.
GHS Hazard Pictograms Quiz Practice GHS hazard pictograms with seeded rounds, four-choice symbol matching, missed-answer review, and an accuracy split chart.
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 patio containers from crop spacing, bed size, seeds, soil volume, harvest timing, and exportable row plans.
Garden Calendar Planner Turn crops, frost dates, season, bed notes, and succession settings into a dated garden calendar with seed-start 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 Generate GitHub Actions matrix workflow YAML with runtime and runner axes, cache choices, include/exclude rows, and review checks.
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 Look up the Good VO2 max range by adult age cohort and reference sex, then classify a measured value with next-tier gap 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 GraphQL queries, fragments, and schema SDL locally, compare readable and compact output, and catch bracket or role warnings before handoff.
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 from brew time, taste, and grinder range, with micron bands, dial moves, and a brew trace for repeatable adjustments.
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 Build a pediatric growth report from visit rows, showing percentile trends, height-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 Check child growth visits for percentile drift, corrected age, height velocity, 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 data, text inventory, and weekly slots, then review group drafts, rotation load, 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 response headers or a public URL, with gzip/Brotli evidence, Vary checks, byte-savings estimates, and request recipes.
Gzip Text Decompressor Decompress gzip, zlib, and raw deflate text locally from Base64, hex, escaped bytes, or files with wrapper checks 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 Audit HA pair rows in your browser for active/standby drift, VIP mismatches, stale sync, heartbeat gaps, and priority conflicts with clear failover findings.
HAProxy Backend Config Generator Build an HAProxy backend block from server rows, health checks, balance mode, TLS choices, persistence, and review notes before copying.
HCL Converter Convert HCL or Terraform config in your browser into YAML, JSON, and flat key-value views with path ledgers and schema drift 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 with named exercise intervals, warm-up, round recovery, live browser cues, density checks, logs, and load charts.
HMAC Generator Generate HMAC signatures in your browser from text or local files, with SHA, RIPEMD, legacy MD5, byte encodings, prefixes, and match checks.
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, warnings, and copy-ready head or full-page markup.
HTML Entity Lookup Find the right HTML entity for a symbol, name, or code point, with alias checks, Unicode bytes, and paste forms for HTML, CSS, JavaScript, and URLs.
HTML Escape and Unescape Tool Escape HTML snippets in your browser or decode entities back to text with context profiles, pass-by-pass logs, and copy-safety warnings.
HTML Escaper Escape text or markup for HTML text nodes, attributes, XML, or strict handoffs, with entity preservation checks and readable ledgers.
HTML Minifier Minify HTML in your browser, compare byte savings, and review spacing, comments, raw-text blocks, and attribute risks before copying.
HTML Tag Stripper Turn HTML fragments, emails, or pages into browser-local plain text with spacing controls, safe URL checks, image-alt handling, and review tables.
HTML Unescaper Decode escaped HTML text or small files in your browser, inspect each entity change, and flag unresolved or script-shaped output.
HTML to JSX Converter Turn pasted or loaded HTML and SVG into JSX locally, with React attribute fixes, style objects, event warnings, and migration checks.
HTML to Markdown Converter Convert pasted or loaded HTML into readable Markdown in your browser, with dialect choices, table safeguards, warnings, and reviewable exports.
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 scoring and remediation cues.
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 text files, with cleanup hints, confidence labels, ambiguity checks, and exportable evidence.
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 pace from resting inputs, then review cycle timing, trial windows, comfort warnings, and exportable results.
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 Audit hostnames, URLs, and CSV rows for DNS-safe syntax, naming regex drift, lowercase policy, required suffixes, and duplicates.
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 Build hreflang clusters from locale URL rows, then copy head tags, sitemap XML, or HTTP headers with 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 fixes.
Hypertext Transfer Protocol (HTTP) Redirect Checker Trace an HTTP redirect chain hop by hop, compare status, security, latency, host handoffs, loop signals, 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 IAM policy JSON for wildcard permissions, broad principals, negated allows, exception claims, and remediation steps before approval.
INI Converter Convert INI or CFG text in your browser into JSON, YAML, properties, environment-variable text, and normalized INI with parser checks.
IOPS / MBps / GB-per-day Converter Convert storage IOPS, MB/s, Mbps, and GB/day from block size and active hours, then compare ceiling headroom, block pressure, and cloud disk fit.
IP Address to Decimal Converter Convert an IPv4 address or 32-bit integer into decimal, plus hex, binary, mapped IPv6, range labels, and octet-weight checks.
IP Overlap Checker Find overlapping IPv4 CIDR ranges, host-bit fixes, duplicate address counts, and merged coverage blocks before routing or peering work.
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, size host requirements, spot alignment gaps, and review fit, headroom, and charts before rollout.
IPv4 Renumbering Planner Plan IPv4 renumbering waves from host mappings, prefix checks, DNS and DHCP timing, with readiness findings, rollback steps, and exportable runbooks.
IPv4 Subnet Allocation Planner Plan IPv4 subnet allocations from a parent CIDR, size VLSM child networks from host demand, and review gaps, headroom, gateways, and overflow.
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 Convert one IPv6 value between compressed and expanded forms, with hextet, binary, reverse-DNS, prefix, zone, and dotted-tail checks.
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 simple image backgrounds in your browser, review mask warnings and coverage, then download a transparent PNG for product photos or mockups.
Image Compressor Compress an image in your browser, compare size and quality changes, and control resize, format, EXIF, and target-size choices before download.
Image Cropper Crop an image in your browser with exact source-pixel framing, aspect-ratio presets, upscaling checks, and PNG, JPEG, or WebP output.
Image Format Converter Convert one image in your browser with resize, transparency, byte-size comparison, and format warnings before downloading the result.
Image Metadata Stripper Strip hidden image metadata in your browser, compare source and clean findings, and download a fresh JPEG, PNG, or WebP copy.
Image Resizer Resize one image in your browser with side-by-side preview, fit, crop, padding, quality, size cap, and no-upscale checks before download.
Image to Base64 Encoder Encode one image into Base64, Data URI, JSON string, and embed snippets while checking size, optimization, SVG, and inline delivery tradeoffs.
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 an owner follow-up ledger with due-date states, blocker warnings, missing-field checks, and charted workload.
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 Turn incident notes or CSV rows into a sorted timeline, phase handoff, gap chart, and evidence-aware review report for post-incident cleanup.
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 network interface descriptions from config, CSV, or show-output rows for missing evidence, duplicate text, length limits, and cleanup notes.
Intermittent Fasting Planner Plan intermittent fasting windows from a first meal time, with safety ceilings, weekend shifts, hydration reminders, and downloadable schedules.
Internet Protocol (IP) Geolocation Finder Check a public IP, domain, or URL for approximate location, timezone, ASN, reverse DNS, map coordinates, and practical next checks.
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 or research brief with tailored questions, follow-ups, scoring anchors, risk signals, and pacing cues.
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 clean tables, branch-aware previews, and safer handoff files with path and precision checks in your browser.
JSON Diff Comparator Compare two JSON payloads in your browser, review path-level changes, tune array matching, ignore noisy fields, and export audit evidence.
JSON Formatter Format JSON in your browser into readable, compact, line-stream, and sorted outputs with duplicate-key, number precision, and size checks.
JSON Repair Tool Turn broken JSON-like paste into strict JSON in your browser, with repair evidence for comments, wrappers, loose literals, and precision risks.
JSON Schema Breaking Changes Checker Check JSON Schema changes in your browser, flag required-field, type, enum, constraint, closure, and $ref risks, and export evidence.
JSON Sorter Turn messy JSON into repeatable key order in your browser, with JSONC cleanup, duplicate-key warnings, path review, and array-order controls.
JSON Validator Validate JSON, JSONC, JSON5, or JSON Lines locally, then inspect syntax errors, duplicate keys, precision risks, and formatted output.
JSON to CSV Converter Turn nested JSON or JSON Lines into clean CSV or TSV, with record-path selection, flattened headers, previews, and spreadsheet formula checks.
JSON to TypeScript Converter Turn JSON or JSON Lines samples into TypeScript declarations in your browser, with optional-field inference, null handling, guard code, and review notes.
JSON-LD Generator Generate JSON-LD structured data for Article, Product, Organization, and FAQ pages with visible-content checks and copy-ready markup.
JSONPath Tester Test JSONPath selectors on pasted or loaded JSON locally, compare matched values with paths and JSON Pointers, and check filter or syntax issues.
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 locally for risky claims, issuer or audience mismatches, long lifetimes, weak headers, and data exposure.
JWT Decoder Decode a compact or Bearer JWT in your browser, inspect readable claims, and review timing, issuer, audience, signature, and sensitive-claim warnings.
JavaScript Minifier Minify JavaScript in your browser, review syntax feedback and gzip savings, and choose safer settings for modules, comments, and source maps.
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 Generate a Keepalived VRRP config with VIP rows, peer transport, health checks, directive audit, and failover timing before copying.
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 text into JSON, YAML, or handoff config with a key ledger, duplicate checks, and local parsing.
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 Generate Kubernetes Deployment YAML with Service routing, health probes, rollout settings, security checks, and HPA or PDB add-ons.
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 Build Kubernetes NetworkPolicy YAML from pod selectors and ingress or egress allow rows, with peer checks, rollout commands, and a flow map.
Kubernetes Pod Security Context Checker Check Kubernetes workload YAML for risky securityContext settings, inherited pod defaults, Pod Security blockers, and remediation patch cues.
Kubernetes Resource Requests Checker Check Kubernetes manifests for missing CPU and memory requests, limit policy gaps, QoS signals, pod budgets, and scheduler footprint clues.
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 Write and check LaTeX equations with live preview, source diagnostics, snippet menus, and reusable code, image, and document exports.
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 quiz pack for flags, map outlines, signal alphabets, and Braille with seeded sheets, answer keys, and coverage checks.
Lens Equivalence Comparator Compare camera lenses across formats, matching framing, depth-of-field look, video crop modes, and practical target lens choices.
Letter Tracing Sheet Generator Make printable letter tracing sheets with custom A-Z ranges, guide lines, formation cues, learner levels, and repeatable worksheet 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 reproducible logic grid puzzles with custom categories, seeded clues, uniqueness checks, printable sheets, answer keys, and constraint maps.
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 repeatable lorem ipsum for mockups with paragraph, sentence, or word targets, tone control, metrics, and copy-ready formats.
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 and EUI-64 forms, and compare vendor evidence with local flag, privacy, and special-use checks.
MAC Address Generator Generate MAC address batches for labs and fixtures with prefixes, local/unicast flag control, seeded replay, uniqueness checks, and exportable results.
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 an email domain's MTA-STS TXT record, HTTPS policy, cache window, MX coverage, and policy-host certificate before enforce mode.
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 Look up MX records for a domain or mailbox, compare resolver views, catch RFC 7505 conflicts, and review host and mail-policy warnings.
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 change schedules for overlapping maintenance windows, blackout hits, owner collisions, and concurrency spikes with review-ready ledgers.
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 recognizing US state, territory, and world country outlines with seeded quiz rounds, score percentages, answer review, and charts.
Marathon Pace Predictor Estimate marathon finish time from weekly distance, training speed, and run frequency, then review pace splits, warning flags, charts, and exports.
Marathon Training Schedule Planner Build a marathon training schedule from your race date and current base, with cutback weeks, taper planning, guardrail checks, and calendar exports.
Maritime Signal Flags Quiz Practice International Code of Signals flags with letter, numeral, or mixed quizzes, seeded retakes, score charts, and missed-answer review.
Markdown Previewer Preview pasted or local Markdown, compare GFM with CommonMark, and review sanitized HTML, heading anchors, unsafe links, and exports.
Markdown Table Generator Generate a GitHub-style Markdown table from CSV, TSV, semicolon, or pipe data with header detection, pipe escaping, column audits, and exports.
Markdown to HTML Converter Convert Markdown into reviewable HTML with a sanitized preview, conversion ledger, and raw-HTML or external-link warnings before publishing.
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 SVG or native preview, XML syntax and namespace checks, structure metrics, element charts, and clean .mml exports.
Matrix Screensaver Simulator Create a Matrix-style code rain screensaver with live preview, density and glow tuning, fullscreen checks, metrics, and exports.
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 countdown, start and interval bells, live progress, device cue options, schedule tables, charts, and exports.
Meeting Agenda Generator Build a timeboxed meeting agenda from outcomes, topic rows, and decision rules with owner checks, facilitation prompts, and overrun 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 Format meeting notes into structured minutes with attendance, decision logs, action registers, readiness checks, and copyable Markdown.
Meta Tag Generator Generate search and social meta tags from page details, with canonical URL checks, robots warnings, preview image validation, and copy-ready 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 Generate missing-number worksheets with ranges, counting steps, repeatable seeds, printable prompts, 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, PSS, and GDS-15 routes by concern, time, safety, and fit before choosing a first screener.
Morse Code Decoder Decode written Morse into readable text in your browser, check separators and unknown groups, then review timing charts and practice audio.
Morse Code Generator Generate Morse code from text or TXT files with WPM timing, Farnsworth spacing, playback, WAV audio, timeline charts, and unknown-character checks.
Morse Code Quiz Practice International Morse by matching dot-dash prompts to letters or numbers, then review missed patterns with scores, charts, and exports.
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 pasted rows or Aiken blocks, with seeded versions, 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 Find NAICS codes by industry phrase or code, compare 2022 matches with 2017 retired rows, 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 upgrade needs, timeout mismatches, and prioritized fixes.
NTP Offset Log Checker Check NTP and chrony peer rows for offset, jitter, reach, stratum, and source-selection risks, with a peer ledger and offset map.
Name Tracing Sheet Generator Create printable name tracing sheets from a roster, tune guide lines and practice patterns, and check long names or dense pages before printing.
Nameserver Health Check Check a domain's nameservers with resolver comparison, glue and public-address checks, SOA timer review, DNSSEC clues, 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 netcat or ncat commands for authorized connect, listen, scan, TLS, proxy, and transfer tasks with shell-aware quoting and warnings.
Netplan Config Generator Generate Netplan YAML for a static Ubuntu interface with routes, DNS, MAC matching, MTU options, and validation warnings before host changes.
Network Audit Findings Report Turn network audit findings into a prioritized register with owner queues, evidence gaps, escalation status, charts, and export-ready brief wording.
Network Change Plan Report Build a network change plan with readiness gates, rollback checks, run order, residual risk, and a cutover profile for review-ready tickets.
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 Generate an NGINX server block for static, PHP-FPM, or proxy hosting with TLS redirects, upstream options, warnings, 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 Build printable number tracing worksheets with bounded ranges, trace-copy layouts, count cues, setup warnings, and repeatable seeded versions.
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 Compare registered OAuth redirect URIs with observed requests, then flag exact-match drift, wildcard scope, fragments, and open-redirect clues.
OCR PDF Tool Extract text from scanned or text-native PDFs in your browser, with OCR fallback, page confidence, DPI guards, and review-ready 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 incident rows, owners, and escalation notes, then catch hot items, missing actions, and risky async notes.
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, clear enemies, escape through the gate, and review local scores, event logs, score charts, and exports.
Online Breakout Game Play a Breakout-style brick game with preset or custom challenge settings, streak scoring, local best scores, and exportable run records.
Online Clock Check live local, UTC, and world-zone time, compare handoff windows by zone, and copy Unix timestamps or calendar invite text.
Online Digger Game Play a Digger-style tunnel game in your browser, collect emeralds and gold, then review score sources, shots, bag drops, and route pace.
Online File Compressor Compress one local file in your browser, choose ZIP, TAR, GZ, or Brotli output, then review size savings, SHA-256 integrity, and split parts.
Online Pacman Game Play a Pac-Man-style maze run, clear pellets under patrol pressure, and review score, power-chain, fruit, history, and run artifacts.
Online Snake Game Play Snake with wrap or solid walls, chain apples for combo boosts, and compare score, pace, crash cause, timeline, and run history.
Online Space Invaders Game Play a Space Invaders-style browser game with mouse, keyboard, or touch controls, then compare score, accuracy, threat, and saved bests.
Online Tetris Game Play a Tetris-style browser game with speed presets, ghost and hold assists, next-piece previews, touch controls, and run summaries.
Online Tic Tac Toe Game Practice Tic Tac Toe against a computer or local opponent with hints, threat markers, board scores, saved 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 Build Open Graph and X card meta tags from page details, preview images, article data, and crawler warnings before copying head markup.
Open Graph Tag Previewer Preview social share cards from pasted HTML or a public URL, then review Open Graph, X card, image, canonical, and crawler warnings.
OpenAPI Operation Coverage Checker Check OpenAPI operation coverage against test evidence, spot missing or unmatched routes, and turn release-gate gaps into an owner-ready queue.
OpenVPN Client Config Generator Build an OpenVPN client profile from endpoint, routing, authentication, cipher, TLS, and certificate choices 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, compare local rewrite and production-size estimates, and catch image, encryption, or file-limit warnings.
PDF Merger Merge local PDF files in a chosen order, check page totals and size warnings, set output metadata, and download one browser-built document.
PDF Page Deleter Delete pages from a PDF in your browser, verify the keep/delete map, and download a cleaned copy with range, size, and fidelity warnings.
PDF Page Extractor Extract selected PDF pages in your browser, keep typed order or remove repeats, and verify the new file with a manifest and exportable checks.
PDF Page Manager Arrange PDF pages in your browser with typed ranges, rotation, split ZIP packets, source ledgers, page-flow checks, and local downloads.
PDF Page Marking Planner Mark selected PDF pages in your browser with page numbers, watermarks, range parsing, placement checks, and downloadable PDF output.
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, reverse or odd-even presets, duplicate controls, and a manifest for checking the rebuilt file.
PDF Password Workflow Planner Generate local PDF open and owner passwords, check entropy, map permission flags, and export redacted handoff notes for later encryption work.
PDF Protector Protect a PDF in your browser with open and owner passwords, qpdf AES encryption, permission profiles, metadata handling, and verification checks.
PDF Redactor Plan PDF redactions in your browser, scan selectable text for targets, flag hidden-data risks, and export evidence without creating a redacted file.
PDF Repair Tool Repair a damaged PDF in your browser, inspect parser and structure warnings, and download a normalized copy when the file can be rebuilt.
PDF Rotator Rotate selected PDF pages in your browser, choose ranges or orientation groups, review the rotation map, and download a rewritten copy.
PDF Signer Stamp a local PDF with a typed, drawn, or image signature, choose exact placement, and download a visual-only copy with certificate warnings.
PDF Splitter Split a PDF in your browser into custom ranges, one-page files, or fixed-size packets with overlap warnings, a manifest, and ZIP output.
PDF Unlocker Unlock an owner-approved PDF in your browser with a known password or empty-user restriction setting, then download a locally verified copy.
PDF Watermarker Add text watermarks to a PDF in your browser, choose exact pages, tune opacity, rotation, tiling, and download the marked copy.
PDF to File Converter Convert a local PDF into text, page images, documents, slides, or data rows with page-range controls and fidelity warnings before download.
PEM Bundle Extractor Extract PEM blocks from pasted text or files, separate certificates, CSRs, keys, and other labels, and record each item 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 CSV-style boot rows, with default checks, fallback entries, 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 Build a race pace band from distance, finish time, marker spacing, and pacing strategy, with split tables, drift charts, and exportable plans.
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 care notes, meals, rest, activities, and reminders, with pickup-ready wording and exportable ledgers.
Passport Photo Size Lookup Look up passport, visa, and ID photo sizes, then check head-height bands, DPI pixel targets, print-sheet fit, and authority 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 Create printable repeating-pattern worksheets with AB to ABBA cycles, missing-cell prompts, cut pieces, answer keys, and load 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, output style, and caution level, then review fit scores, heatmap evidence, and guardrails.
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 in your browser from word lists, target sounds, and cues with answer keys, teacher notes, coverage checks, and exports.
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 Build printable picture-word matching sheets from cue and word rows, with shuffled word banks, answer keys, teacher checks, and exports.
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 custom focus, break, and goal settings, then track live phases, ETA, schedules, time mix, and exports.
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 group exposed hosts into cleanup tables.
Port List Checker Clean messy port lists in your browser into TCP/UDP target strings, compact ranges, IANA bands, service warnings, and scan-ready outputs.
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 Plan a pranayama breathing sequence with timed ratios, prep, rests, cooldown, cue notes, a rehearsal rail, phase ledger, and exports.
Pre-Writing Strokes Sheet Generator Create printable pre-writing stroke sheets with trace-to-independent 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 a progressive muscle relaxation routine, follow live tense-relax cues, and review timing logs, recovery share, and exportable plans.
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 Generate a Prometheus scrape config from target rows, labels, timing, limits, and overrides, then review YAML, ledgers, and audit warnings.
Prompt String 1 (PS1) Generator Build a Bash PS1 prompt from ordered tokens, ANSI colors, imported strings, sample previews, warnings, and exportable setup notes.
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 in your browser into JSON, YAML, INI, and env output with duplicate-key warnings and path previews.
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 and CDN header evidence from pasted logs or a live request, trace forwarded IP chains, and flag spoofing or trust-hop risks.
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 domains to Punycode and back, with local label audits, DNS length checks, URL-parser comparison, and copy-ready outputs.
QR Batch Generator Generate QR code image batches from pasted rows or CSV/TXT files, then check duplicates, scan-readiness warnings, manifests, and ZIP exports.
QR Label Sheet Generator Create print-ready QR label sheets from CSV or TXT rows with stock/custom layouts, payload checks, contrast warnings, and local exports.
Qibla Finder Find the Qibla direction from IP, city search, Browser GPS, or manual coordinates with true or magnetic bearing and turn guidance.
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 recovered payload, and review URL, OTP, Wi-Fi, and scan-trace warnings before you act.
Quick Response (QR) Code Generator Build QR codes for links, Wi-Fi, contacts, messages, and events with scan-readiness scoring, logo checks, and downloadable images.
RACI Matrix Generator Build a RACI matrix from pasted activity rows, then review ownership gaps, role-load signals, and handoff notes before sharing.
RADIUS Client Config Generator Generate FreeRADIUS client blocks from NAS rows with local secret generation, address validation, hardening directives, and deployment review.
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 keys between PKCS#1, PKCS#8, encrypted private, and public PEM wrappers with local parsing and fingerprint checks.
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 Estimate a race finish from a prior result, then compare Riegel-based pace, splits, race-day condition scenarios, and exportable charts.
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 a race or workout with live lap capture, split-note parsing, pace comparisons, downloadable charts, and a readable summary report.
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 defined range, then compare secure or seeded draws with repeat rules, weighted profiles, and bias diagnostics.
Random Picker Pick random names or rows from a list, replay seeded draws, model inclusion odds, and export a clear manifest with weights and group rules.
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 readability with grade estimates, reading-ease bands, sentence flags, word-load cues, charts, and browser-side text handling.
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 for grade-level readability, target-band fit, formula spread, and sentence or word flags for revision.
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 JavaScript regex patterns against accepted and rejected samples, with whole-line mode, match spans, timeout limits, and exportable verdicts.
Regex Tester Test a JavaScript regex against sample text, inspect match spans and capture groups, catch timeout warnings, and preview replacements.
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 Turn commits, PR lists, or release bullets into grouped release notes with readiness warnings, change ledgers, and exportable drafts.
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 resistor color bands into ohms, tolerance limits, temperature drift, and orientation checks for 4-, 5-, and 6-band parts.
Resistor Combination Finder Find resistor combinations for a target value, compare series, parallel, and mixed matches, and check tolerance plus part power stress.
Resolver Policy Difference Comparator Compare DNS-over-HTTPS resolver answers across open, threat-filtered, and family-filtered profiles to spot policy splits, zero-sinks, and DNSSEC drift.
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, confirm PTR names resolve forward, compare public resolvers, and spot stale records.
Reverse DNS Zone Generator Generate an IPv4 reverse DNS zone from a CIDR block and PTR rows, with SOA checks, RFC2317 parent records, and review exports.
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 revision timetable around exam dates, weekly study hours, priorities, and difficulty, then check coverage gaps and load warnings.
Ring Size Converter Convert a ring diameter, circumference, or regional size into US, UK/AU, ISO/EU, and nearby chart matches with fit and delta notes.
Risk Register Generator Build a risk register from pasted CSV or text, score inherent and residual exposure, and queue owner, review, and treatment actions.
Road Signs Quiz Practice US MUTCD road signs by meaning, choose regulatory or warning sets, and review scores, missed answers, charts, and seeded retakes.
Robots.txt Generator Build a robots.txt file from crawler sections, 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, named place values, or custom increments with exact traces, tie-rule checks, and exports.
Rubric Generator Build a rubric matrix from assignment goals, criteria, weights, and levels, then review 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, compare clock skew and bearer expiry, and export audit evidence for SSO review.
SAML Metadata Validator Validate SAML metadata XML for entity IDs, SP or IdP roles, endpoint policy, certificate expiry, signature presence, and import blockers.
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 SCSS, indented Sass, or plain CSS in your browser, then review compiled CSS, source-map output, metrics, and audit warnings.
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 Prometheus SLO burn-rate alert YAML with multi-window tiers, budget thresholds, routing labels, a chart, and review tables.
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 Look up SMIMEA or OPENPGPKEY DNS records for a mailbox, check the derived owner name, and compare DNSSEC resolver evidence with payload clues.
SNMP Polling Load Calculator Estimate SNMP polling pressure from devices, OIDs, intervals, retries, SNMPv3 overhead, MTU limits, and poller capacity checks.
SPF Record Generator Build an SPF TXT record from sender inventory, provider includes, IP ranges, A/MX choices, redirect policy, and lookup-budget warnings.
SPF Validation Report Check a domain's SPF TXT record, count DNS lookup risk, trace includes and redirects, and export clear validation notes for mail setup reviews.
SQL Formatter Format pasted SQL or a local file for database review, with dialect-aware layout, caveat warnings, statement metrics, and audit exports.
SQL INSERT Generator Generate SQL INSERT scripts from pasted rows or local CSV files with dialect quoting, literal typing, delimiter detection, and row and column review.
SQLite Manager Inspect a local SQLite file in your browser, run SQL, make careful rowid-table edits, and export rows, SQL dumps, or a database copy.
SRV / NAPTR Service Discovery Check Check SRV and NAPTR routes for SIP, SIPS, XMPP, or LDAP, compare public 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 Generate OpenSSH Host blocks from CSV host rows, apply defaults and ProxyJump paths, then review identity, host-key, and alias warnings.
SSL CA Matcher Match a TLS leaf certificate to a candidate issuer CA, then review signature proof, DN alignment, CA status, expiry risk, and trust score.
SSL Certificate Chain Checker Check a live host or pasted PEM certificate chain for missing issuers, hostname mismatch, expiry risk, weak crypto, and install-ready PEM.
SSL Checker Check a public hostname's TLS posture with SSL Labs grades, trust-path gaps, legacy protocol flags, expiry risk, and a prioritized fix queue.
SSL Expiry Checker Check SSL/TLS certificate expiry from a live host, with renewal timing, SAN coverage, issuer, serial number, and fingerprint evidence.
SSL Matcher (Certificate, CSR, and Key) Match a TLS certificate to its CSR or RSA private key in your browser with SPKI pins, chain warnings, encrypted-key support, and exports.
SSL OCSP Checker Check OCSP revocation status for a public TLS host or pasted certificate, with responder timestamps, warnings, and replay evidence.
SVG Placeholder Generator Build SVG placeholders with exact canvas sizes, readable labels, contrast warnings, live previews, and copyable HTML or CSS embed snippets.
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 delivery, Secure pairing, prefix rules, scope warnings, and flow risks before SSO or embeds fail.
Satcom Status Tracker Check satellite TLE age, orbit class, readiness, and optional SatNOGS status before relying on a record for link planning or fleet triage.
Satellite Pass Tracker Forecast satellite passes from a TLE and observer location, then compare elevation, azimuth, timing, charts, and calendar-ready exports.
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 Build printable scissor skills worksheets with leveled cut paths, start-stop cues, paste boxes, setup notes, 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 Create a classroom seating chart from a roster with fixed seats, empty desks, repeatable shuffles, group balancing, and placement audit notes.
Secret Pattern Sample Checker Scan configs, logs, and support snippets for secret-like keys, then review masked evidence, provider-pattern hits, entropy cues, and rotation steps.
Secure Password Generator Generate a random password in your browser, tune allowed characters, and compare entropy, crack-time, zxcvbn strength, and history.
Secure Shell (SSH) Client Config Editor Edit an SSH client config in your browser, reorganize Host blocks, test wildcard matches, and review lint, security, and diff reports.
Secure Shell (SSH) Key Fingerprint Checker Check an SSH public key in your browser, compare SHA256 or MD5 fingerprints, and review host-key trust signals before saving records.
Secure Shell (SSH) Public Key Converter Convert one SSH public key between OpenSSH, SSH2, and PEM in the browser, then compare SHA-256 fingerprints, comments, and warnings.
Secure Shell (SSH) Public Key Extractor Extract an SSH public key in your browser from private-key text or public lines, then check fingerprints and build authorized_keys entries.
Secure Sockets Layer (SSL) Certificate Converter Convert PEM, DER, P7B, and PFX certificates in your browser, inspect chain and expiry details, and catch key issues before download.
Secure Sockets Layer (SSL) Certificate Decoder Decode SSL certificates from PEM, DER, or PKCS#7 in your browser, with SAN coverage, validity, fingerprints, usage, and chain checks.
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 subjects for the SemVer bump floor, compare a planned version, and flag breaking, feature, fix, and neutral signals.
Semaphore Signals Quiz Practice semaphore A-Z recognition from flag diagrams, replay seeded drills, and review missed letters with a score ledger and accuracy chart.
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 Build printable shape tracing worksheets from presets or custom lists, with repeated outlines, color cues, warning checks, and guide tables.
Shoe Size Converter Convert shoe sizes from foot length or regional labels, compare US, UK, EU, JP, CN, KR, MX, and BR results, and spot fit 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 printable sight-word practice sheets from Dolch, Fry, or custom lists with teacher keys, word ledgers, home notes, and review cues.
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 sitemap URLs from pasted XML, text files, or a public URL with filters, duplicate checks, source evidence, audit warnings, 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 Find sleep-hygiene gaps across caffeine, screens, schedule, naps, room, and light, then rank a focused reset plan for retesting.
Sleep Hygiene Path Planner Plan a sleep-hygiene path from ISI, PSQI, ESS, diary efficiency, sleep debt, and safety cautions with ranked steps and CBT-I window checks.
Sleep Sound Generator Build a sleep sound mix with colored-noise recipes, a 45% safe-volume cap, timers, fade controls, coach notes, and masking charts.
Sleep Window Adjustment Planner Plan fixed-wake sleep-window changes from weekly sleep efficiency values with thresholds, confirmation weeks, stability cues, and safety guidance.
Slug Generator Generate readable URL, file, anchor, and CSS-ready slugs from titles or batch lines with Unicode handling, smart trimming, 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 Track a live multi-sport scoreboard with quick scoring buttons, fouls, timeouts, possession, correction flags, 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 Simulate a browser starfield screensaver, tune density, warp, comets, and frame targets, then compare FPS, quality scale, and flight notes.
Static Route Commands Generator Turn route rows into static route add, replace, and delete commands for host and network CLIs with CIDR checks and rollback 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 Plan stimulus-control steps for insomnia with leave-bed cues, a fixed wake anchor, calm reset activities, adherence priorities, and a response chart.
Strength Progression Planner Plan a week-by-week strength block from working load, reps, deload cadence, and plate rounding, with rule checks and a load curve.
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 by country or region, replay seeded drills, add timers or extra choices, and review missed names, timeouts, and charts.
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 Build a substitute teacher packet with schedule timing, classroom routines, readiness checks, pacing review, and printable handoff text.
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 goal, audience, topic lanes, and response mix, then review the ledger, fatigue cues, and type balance.
Switchport Config Generator Build access or trunk switchport CLI for Cisco IOS, NX-OS, or Arista EOS with VLAN-list validation, command notes, and paste-safety warnings.
Switzerland Rail Service Tracker Track Swiss departures and arrivals from public transport data, with station filters, platforms, expected times, route stops, and delay exports.
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 drive labels with binary readouts, and copy report-ready capacity notes.
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, check the negotiated protocol and certificate chain, and separate DNS, TCP, and TLS timing problems.
TLS-RPT Record Validator Validate a TLS-RPT DNS record for a mail domain, check report destinations and policy signals, and build a publish-ready TXT snippet.
TOML Converter Turn TOML into target config formats with parse checks, key-path ledgers, type previews, and schema sketches for safer migrations.
Tab-Separated Values (TSV) Converter Convert TSV or delimiter-separated rows into clean tables and typed exports with header detection, row warnings, and column profiles.
Tabata Workout Timer Build and run a Tabata workout timer with 20/10 presets, editable intervals, exercise rotation, browser cues, a timeline chart, and run logs.
Table Data Converter Turn pasted or local table files into clean Markdown, JSON, HTML, or delimited output with previews, header repair, and formula warnings.
Table Tennis Scoreboard Tracker Keep a table tennis match score with server rotation, deuce and advantage cues, game commits, point-pressure chart, and exportable records.
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 tax refund or balance due from wages, credits, withholding, payments, offsets, and safe-harbor checks.
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 Plan a metronome session with tap tempo, meter, swing, accents, ramp blocks, audible playback, and timing tables you can copy or download.
Ten-Frame Counting Sheet Generator Generate printable ten-frame counting sheets for 0 to 20 practice with answer keys, setup tables, seeded mixes, and a frame-fill map.
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 a tennis match point by point with server-first calls, advantage or no-ad rules, tiebreaks, pressure cues, and exportable score history.
Terminal Installer Simulator Generate browser-local installer terminal output with package-manager presets, seeded replays, 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 Check pasted Terraform variable blocks for risky defaults, secret-like values, type mismatches, nullable behavior, and prioritized remediation rows.
Test Case Generator Turn a feature workflow into manual, Gherkin, or automation-ready test cases with traceable IDs, boundary coverage, review checks, and exports.
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 in your browser with ignore options, unified diff output, change tables, warnings, and exportable review data.
Text Encryptor & Decryptor Encrypt or decrypt private text in your browser with AES-GCM defaults, password stretching, portable envelopes, integrity checks, and byte-size breakdowns.
Text Hash Generator Hash exact UTF-8 text in your browser, compare SHA-2, SHA-3, MD5, SHA-1, and RIPEMD-160 digests, with salt rules and saved profiles.
Text Sorter Sort pasted text or TXT/CSV lists in your browser with natural order, cleanup filters, seeded shuffle, duplicate counts, and copy-ready 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 public CNAME path, compare resolver views, and check terminal A, AAAA, MX, TXT, or CAA answers before a DNS cutover.
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 Create tracing worksheets for names, letters, numbers, shapes, and pre-writing strokes with guide lines, formation cues, and page estimates.
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 suspicious URL against Safe Browsing, SURBL, and local risk signals, then review scope-aware verdicts and follow-up links.
URL Encode and Decode Tool Encode or decode URL text by context in your browser, inspect percent escapes and plus-space rules, and catch round-trip issues before copying.
URL Parser Parse a URL or query string locally into components, duplicate query rows, encoding notes, masked sensitive values, and a rebuilt review link.
UTM URL Generator Build a GA4 UTM campaign URL with required source, medium, and campaign labels, existing-tag cleanup, channel hints, and hygiene checks.
Unicode Character Lookup Inspect a character, grapheme, code point, or escape, then get Unicode names, U+ values, UTF bytes, normalization changes, and hidden-text warnings.
Uniform Resource Locator (URL) Decoder Decode percent-encoded URLs or text, inspect query pairs and character bytes, clean tracker parameters, and preview JSON or Base64 payloads.
Uniform Resource Locator (URL) Encoder Percent-encode URL components, full links, form values, and paths, then audit escapes with a character map and QR-ready handoff.
Unit Converter Convert measurements across 21 categories with formula notes, equivalent-unit tables, guardrail warnings, and range curves for scale checks.
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 a UUID into canonical forms, version and variant evidence, timestamps, bit-lane tables, routing notes, and JSON for audits.
Universally Unique Identifier (UUID) Generator Generate UUIDs in your browser for random, name-based, and time-ordered IDs with namespace checks, anatomy details, and history.
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 from role, goal, benefit, and acceptance checks, then review criteria, boundaries, readiness warnings, and exports.
User-Agent Parser Parse a User-Agent string or request header into browser, OS, device, bot, token, and Client Hints evidence for support or log review.
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 switch VLAN evidence against trunk policy and spot native VLAN drift, missing allowed IDs, inactive VLANs, and VLAN 1 exposure.
VLAN Migration Planner Plan VLAN port migrations from pasted rows, split ports into timed waves, flag trunk and native VLAN 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, and reflected power into RF mismatch notes with mismatch loss, watt estimates, and review guidance.
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 Design a virtual flower card with custom blooms, colors, message text, repeatable layouts, image exports, and checksum share links.
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 Create printable visual schedule cards from routine rows with picture cues, optional times, first-then layouts, print checks, and exports.
Vocabulary Matching Sheet Generator Create vocabulary matching worksheets from term-definition pairs with seeded shuffles, answer keys, print-fit checks, parse notes, and exports.
Volleyball Scoreboard Tracker Track a volleyball score with rally points, serve changes, set commits, timeout counts, match-point cues, and a momentum chart.
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 data with RDAP-first lookup, WHOIS fallback, renewal timing, status clues, nameservers, contacts, and 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 Lookup WWN and NAA values from SAN paths or logs, normalize the hex, decode NAA family and OUI hints, and flag fragments before use.
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 Check a public URL's visible web server, CDN, or proxy using HTTP headers, redirect hops, confidence scores, and origin-hint clues.
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, RSVP QR handoff, signed card links, wording tables, print checks, and PNG or PDF exports.
Weekly Workout Schedule Planner Plan a weekly workout schedule around goals, available days, equipment, and recovery, with audit checks, load charts, and calendar output.
Weight Loss Calculator Plan weight loss or gain from body stats, activity, goal weight, and schedule with adaptive calorie targets, BMI context, floor checks, and charts.
Weight-for-Age Percentile Calculator Calculate a child's weight-for-age percentile with WHO or CDC references, z-score, corrected-age option, alert lanes, and follow-up notes.
Weight-for-Length Percentile Calculator Calculate a child's weight-for-length percentile on WHO or CDC references, with z-scores, source-fit notes, alert bands, and target weights.
Weighted Grade Calculator Calculate course grades from weighted percentages or points, with target averages, dropped-row handling, grade bands, and weight warnings.
Weighted Rubric Score Calculator Calculate a weighted rubric score from criteria, score levels, and weights, with grade-band lookup, point conversion, and contribution checks.
Wget Command Generator Build a wget command for downloads, API fetches, FTP pulls, or site mirrors with shell-aware quoting, import parsing, exports, and safety warnings.
What Is My Browser Identify your current browser, storage, graphics, privacy, and compatibility signals with share-ready support notes and exposure warnings.
What Is My Internet Protocol (IP) Address? Check your public IP address with IPv4/IPv6 visibility, ASN, reverse-DNS, location, and source agreement clues for support tickets.
What Is My Screen Resolution Check your screen resolution, viewport, DPR, breakpoint fit, and capture size with density warnings when you enter display diagonal.
Whole-House Water Filter Size Calculator Estimate whole-house filter size from fixture overlap, pressure-drop limits, source-water load, flow headroom, and replacement timing.
Wi-Fi Channel Plan Calculator Plan Wi-Fi AP channel assignments for 2.4, 5, or 6 GHz with DFS and PSC-aware pools, reuse pressure, charts, and exportable tables.
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 Build a window cleaning quote from pane count, access, screens, tracks, restoration work, labor hours, margin floors, and downloadable tables.
Window U-value Calculator Compare whole-window U-values for a retrofit, estimate heat-flow reduction by area and temperature difference, and flag target or SHGC limits.
Wire Gauge Calculator Calculate the smallest AWG wire size that meets voltage-drop and ampacity checks from current, run length, voltage, material, and margin.
WireGuard Config Generator Generate WireGuard server and client configs with peer route checks, a topology preview, placeholder-key warnings, and CSV or DOCX exports.
Word Counter Measure drafts, transcripts, and prompts in your browser with word totals, readability scores, repeated phrases, and frequency charts.
Word Scramble Generator Create printable word scramble worksheets from word-and-hint lists with seeded versions, difficulty choices, answer keys, and source checks.
Word Search Generator Generate a word search puzzle from A-Z word lists with seeded layouts, 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, then check sign, units, speed, and the force-angle curve.
Workout Rounds Tracker Track workout rounds from AMRAP, for-time, or interval logs, with rep totals, pace checks, RPE flags, short-round audits, and saved sessions.
Workout Volume Calculator Calculate workout volume from training rows, compare tonnage with hard-set targets, and account for external and bodyweight-equivalent load.
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 an Excel workbook sheet to CSV in your browser with no upload, delimiter choices, formula handling, and hidden-row checks.
XML Diff Comparator Compare two XML documents in your browser, catch parse errors, match repeated nodes by key or order, and review changed paths with exportable ledgers.
XPath Tester Test XPath against XML or HTML in your browser, compare node or scalar results, and review namespace checks, match ledgers, and code snippets.
YAML Converter Convert YAML into JSON, env, INI, properties, and path tables with local parsing, document checks, schema review, and scalar-only exports.
YAML Formatter Format YAML in your browser, check parse warnings, path rows, change deltas, and JSON handoff data before replacing source text.
YAML Validator Validate YAML text or files in your browser, catch parser errors and duplicate keys, and inspect document counts, paths, and parsed JSON.
ZFS Capacity Calculator Plan ZFS usable capacity for pool builds from vdev layout, disk size, RAID-Z padding, OpenZFS slop, reserve, and target-fit paths.
cURL Command Generator Build a shell-ready curl command from URL, method, headers, auth, body, retries, and timeouts with 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 Generate a dnsmasq DHCP scope config with pool validation, router and DNS options, static reservations, PXE/TFTP lines, and audit exports.
iptables Rule Generator Build iptables or ip6tables commands from CIDRs, ports, chains, backend choices, and strict review checks before 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 Draft a systemd service unit from command, user, restart, dependency, and hardening choices with review notes and host install checks.

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