Simplified Tools

Tools

1069 tools

List of available tools
Blue-Green Deployment Planner Plan a blue-green release schedule with traffic waves, bake windows, capacity warnings, rollback triggers, command drafts, and exposure estimates.
CSS Border Radius Generator Generate border-radius CSS from circular or elliptical corners, preview box-fit scaling, and copy CSS, Tailwind, or token output.
CSS Box Shadow Generator Build CSS box-shadow stacks with editable layers, live surface previews, CSS token outputs, and layer checks for elevation, inset, or glow effects.
CSS Flexbox Generator Build flexbox CSS for responsive rows, columns, wrapping, gaps, and child sizing with live previews, property notes, and starter HTML.
CSS Grid Generator Generate CSS Grid rules from a selector, strategy, gaps, and alignment, with live previews, fit projections, scaffold markup, and ledgers.
Canary Deployment Planner Plan a canary rollout with traffic steps, bake windows, guardrail thresholds, rollback actions, risk notes, charts, and exports.
JSON Schema Generator Generate JSON Schema from sample JSON, choose draft and inference rules, and review property ledgers before copying a validator-ready draft.
NTP Config Generator Generate NTP configs for chrony, ntpd, systemd-timesyncd, and Cisco devices with source parsing, client-access checks, and fallback warnings.
OpenTelemetry Collector Config Generator Generate OpenTelemetry Collector YAML for OTLP traces, metrics, and logs with pipeline ledgers, memory guards, batching, and endpoint checks.
README Generator Draft a repository README from project facts, setup commands, usage examples, license choices, readiness checks, and follow-up file tasks.
Route Table Longest Match Checker Find the IPv4 or IPv6 route that wins for a destination, with longest-prefix ranking, tie-break choices, and host-bit cleanup warnings.
Secrets Rotation Planner Plan a secret rotation with staged cutover timing, validation gates, risk scoring, and exportable change evidence without pasting credentials.
Sitemap XML Generator Generate sitemap XML from same-host URLs or paths, normalize lastmod and crawl hints, review exclusions, and catch protocol limits before publishing.
Test Data Generator Generate repeatable synthetic test data from field recipes and seeds, with CSV, JSON, NDJSON, SQL output and recipe quality checks.
Web App Manifest Generator Generate a web app manifest with launch URLs, scope checks, install markup, icon asset ledgers, and warnings for PWA install readiness.
.env File Generator Generate reviewed .env and .env.example files from pasted rows or a small text file, with duplicate checks, quote guidance, and masked secret previews.
.gitignore Generator Draft a repository-ready .gitignore with stack, OS, editor, secret, and exception rules, plus warnings for broad or duplicate patterns.
.gitignore Pattern Coverage Checker Check whether .gitignore rules cover generated and sensitive repository paths, with gate metrics for negations, tracked files, gaps, and review actions.
.htaccess Generator Build an Apache .htaccess draft for redirects, headers, caching, CORS, and access rules with warnings and copy-ready output before staging.
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 layer height, line width, speed, and flow multiplier, then compare demand with calibrated hotend caps.
7 Wonders Score Calculator Score a finished 7 Wonders game, convert remaining coins, resolve treasury tie-breaks, and audit each city's category totals and rank.
7-Minute Workout Timer Run a guided 7-minute workout timer with preset 12-move circuits, adjustable intervals, browser cues, load charts, and plan exports.
ACL Wildcard Mask Calculator Calculate IPv4 ACL wildcard masks from CIDR, subnet, host, or any entries, then review ACE lines, match size, overlaps, and broad matches.
ACME DNS Challenge Readiness Check Check whether an ACME DNS-01 challenge is ready, with TXT matching, delegation-route checks, resolver comparison, and retry timing.
ACME HTTP 01 Readiness Validator Check ACME HTTP-01 retry readiness by testing the host, token body, redirects, IPv6, cache, CDN or WAF, and backend sync evidence.
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 Build and run an AMRAP timer with movement-loop parsing, target pace checks, live score logging, charts, and exportable session records.
API Error Budget Analyzer Measure API error-budget burn from status counts or access-log snippets, with SLO projections, status-code policy checks, and burn guardrails.
API Gateway Cost Calculator Estimate API Gateway monthly spend across HTTP, REST, Private REST, and WebSocket traffic with request chunks, transfer, cache, and budget checks.
API Key Generator Generate API keys in your browser with public lookup IDs, entropy targets, SHA-256 storage hashes, and sensitive-batch warnings.
API Pagination Window Calculator Plan an API pagination window from item count, page size, rate limits, latency, workers, retry reserve, and payload risk checks.
APR Calculator Compare loan offers by modeling APR from net proceeds, upfront finance charges, payment timing, final installments, and note-rate spread.
AWS Lambda Cost Calculator Estimate AWS Lambda monthly cost from requests, billed duration, memory, provisioned windows, streaming overage, free tier, and editable rates.
Acceptance Criteria Generator Draft acceptance criteria from a story, actor, behaviors, and edge cases, then review Gherkin scenarios, checklist gaps, and JSON exports.
Accessibility Ramp Slope Calculator Plan or check an accessibility ramp from rise and run, then review slope, landings, width, handrails, edge protection, and material estimates.
Ad Network Detector Check a public web page for ad-network tags, ads.txt alignment, confidence scores, fetch warnings, and prioritized cleanup actions.
Adult ADHD Self-Report Scale (ASRS v1.1) 6-Question Screener Screen adult ADHD symptoms with the ASRS v1.1 six-item screener, comparing classic shaded count and 24-point cutoffs with follow-up notes.
Age Calculator Calculate age from birth and as-of dates with calendar wording, elapsed totals, leap-day rules, birthday countdowns, and milestone planning.
Air Compressor CFM Calculator Size an air compressor by SCFM, PSI, trigger time, duty rating, tank buffer, and reserve so tool demand and candidate headroom are clear.
Air Purifier CADR Calculator Size an air purifier from room volume and ACH, then compare label CADR, quiet-speed cushion, unit count, and coverage fit for particle removal.
Aircraft Weight Balance Calculator Build an aircraft weight-and-balance worksheet with fuel burn, station arms, CG envelope checks, and phase-by-phase limit warnings.
Airport Code Lookup Look up IATA and ICAO airport codes by code, city, country, or name, with match evidence, source coverage, nearby distances, and map context.
Alcohol Screener Comparator Compare AUDIT-C, AUDIT-10, and CAGE routes by goal, signal, time budget, setting, cutoff frame, and screening limits before follow-up.
Alcohol Use Disorders Identification Test (AUDIT-10) Score the 10-item AUDIT alcohol screen, see WHO risk zones, domain patterns, priority cues, and follow-up notes for safer review.
Alcohol Use Disorders Identification Test (AUDIT-C) Score AUDIT-C alcohol screening answers, compare 3+, 4+, VA/DoD 5+, and 8+ reference lines, and review the strongest item cue.
Alert Noise Rate Calculator Calculate alert noise from classified CSV rows, compare routes with your target, and spot repeat groups, ack delays, and cleanup gaps.
Alphabet Matching Sheet Generator Generate alphabet matching worksheets with letter ranges, cue words, repeatable shuffles, answer keys, and print-ready student sheets.
Alternative DCV Checker Check DNS, CNAME, HTTP, and HTTPS DCV proofs before a certificate retry, with CSR-hash handling, resolver evidence, and mismatch notes.
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 review warnings before playbook use.
Apache Virtual Host Generator Generate an Apache vhost draft for static, PHP-FPM, or reverse-proxy sites, with TLS choices, module checks, and activation steps.
Appliance Energy Cost Calculator Estimate one appliance's monthly and annual running cost from watts, amps, annual kWh, runtime, standby draw, rates, and usage 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 browser-visible HTTP API requests with cURL import, auth, body modes, CORS failure clues, response traces, and local saved presets.
Aquarium Screensaver Simulator Design a browser aquarium screensaver with live fish, bubbles, jellyfish, FPS checks, director cues, fullscreen preview, and exportable scene reports.
Aquarium Stocking Capacity Calculator Plan a freshwater stocking list from adult fish size, tank footprint, filtration, water changes, swim zones, and compatibility warnings.
Aquarium Substrate Amount Calculator Estimate aquarium substrate from tank footprint, sloped depths, density, and bag size, then plan reserve, cost, displacement, and leftovers.
Area Code Lookup Look up NANP area codes from a code, +1 phone number, or place, with assignment status, overlays, dialing notes, and caller-location caveats.
Arithmetic Practice Generator Create arithmetic practice sheets with operation mixes, fact focus, replay seeds, answer keys, setup warnings, and printable exports.
AsciiMath Editor Draft AsciiMath, preview the rendered equation, compare LaTeX and MathML output, and audit token counts before exporting visual files.
Attendance Rate Calculator Calculate attendance rate from present days or absences, then test targets, recovery days, future absence cushion, and scenario projections.
Attendance Sheet Generator Build printable attendance sheets from roster text or CSV with session columns, duplicate-name checks, privacy cues, and downloadable handoff files.
Attenuator Pad Calculator Design a matched Pi or T attenuator pad, compare exact and preferred resistor values, and check power dissipation before choosing parts.
Attic Ventilation Calculator Size attic ventilation from floor area, split intake and exhaust NFA, and turn product ratings into ridge, soffit, roof, or gable vent counts.
Audio File Size Calculator Estimate audio storage from PCM settings or encoded bitrate, with multitrack counts, media-fit checks, duration curves, and exports.
Audit Log Anomalies Analyzer Analyze audit log exports in your browser, ranking failure bursts, privilege changes, source shifts, and after-hours activity with evidence.
Autonomous System Number (ASN) Information Lookup Look up an ASN or public IP address, then compare RIPEstat routes, prefixes, RDAP contacts, PeeringDB context, and routing caveats.
Avro Schema Compatibility Validator Compare released and proposed Avro schemas by mode, with field-level blockers for defaults, aliases, unions, logical types, and registry-ready notes.
BFI-2-S Aligned Proxy Assessment Score a 30-item BFI-2-S-aligned IPIP proxy, compare five domain means, and treat two-item facet pairs as directional clues, not norms.
BFI-44 Style Big Five Proxy Assessment Build a 44-item Big Five proxy profile with trait means, cluster support gaps, answer review, and clear non-normed interpretation limits.
BGP AS Path Policy Checker Check pasted BGP AS paths against origin, first-hop, blocked-ASN, regex, length, and prepend rules before changing routing policy.
BGP Prefix List Generator Generate BGP prefix-list config from CIDR rows with Cisco, Arista, FRR, SONiC, and Junos syntax, normalization, and shadowing checks.
BGP Route Scale Calculator Estimate BGP route memory, peer fanout, and churn risk from prefix counts, retained paths, route bytes, update rates, and budgets.
BIMI Record Generator Generate a BIMI DNS TXT record with logo and evidence URLs, DMARC readiness checks, provider paste steps, charts, and exports.
BIMI Validation Report Validate a domain's BIMI record with DMARC, SVG logo, resolver, and PEM evidence checks, then review readiness scores and fix notes.
BIS/BAS Behavioral Style Proxy Assessment Map BIS/BAS motivation signals across caution, drive, reward response, and fun seeking with keyed scoring, balance labels, and answer review.
BMI-for-Age Percentile Calculator Calculate a child's BMI-for-age percentile from height and weight or a known BMI, then compare WHO/CDC z-score, category, and P95 severity cues.
BMR & TDEE Calculator Estimate BMR, TDEE, calorie targets, weekly pace, and macros from body measurements, activity, formula choice, and goal settings.
BRI-12 Resilience Proxy Assessment Check a 12-item resilience proxy, compare recovery, adaptation, support, and steady-anchor lanes, and track changes against a prior total.
Baby Formula Amount Calculator Estimate a baby formula day from age, weight, feeds, and formula share, with bottle targets, schedule checks, and pediatric caution flags.
Baby Formula Cost Calculator Estimate baby formula costs from prepared ounces, container yield, waste, taxes, shipping, and stock runway with monthly and reorder totals.
Babysitting Rate Calculator Estimate a babysitting quote from local hourly rates, children, care timing, duties, minimum hours, fees, and rounding in one breakdown.
Backup Capacity Calculator Plan backup repository capacity from data size, retention, change rate, copy tiers, reserves, raw overhead, and budget runway checks.
Backup Restore Time Calculator Estimate backup restore time from logical size, compression, tested throughput, fixed recovery phases, and RTO margin checks.
Backup Rotation Planner Plan backup rotation storage from full and incremental sizes, with GFS tiers, dedupe assumptions, retention horizon, and audit notes.
Bakers Percentage Calculator Scale a bread formula by flour or dough weight with starter accounting, hydration math, yeast conversion, rounded weights, charts, and exportable bench notes.
Baluster Spacing Calculator Calculate baluster spacing from rail openings, part width, gap rules, stair rake, and rounded field marks with count, margin, and buy-list outputs.
Bandwidth Delay Product Calculator Size TCP windows from bandwidth and RTT, compare current buffers and stream counts, and spot BDP, overhead, and scaling warnings.
Barbell Plate Load Calculator Plan a barbell target load from bar, collars, and plate inventory, with per-side stacks, nearby reachable loads, and warm-up rows.
Barcode Generator Generate barcode artwork for Code 128, EAN-13, UPC-A, or Code 39 with check-digit controls, quiet-zone checks, and print-fit guidance.
Base64 Encoder and Decoder Encode or decode Base64 text and files in your browser, inspect recovered bytes, repair padding, and create URL-safe or Data URL output.
Bathroom Exhaust Fan CFM Calculator Size a bathroom exhaust fan from room size, fixtures, duct path, moisture load, candidate CFM, noise target, and timer coverage.
Battery Charge Time Calculator Estimate battery charge time from capacity, SOC window, charger or source cap, 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, 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 exports.
Beck Hopelessness Scale (BHS) Assessment Assess past-week hopelessness with 20 true-or-false BHS items, severity bands, score-source charts, and clear follow-up cautions.
Beginning Sounds Sheet Generator Build printable beginning-sound worksheets from words, focus sounds, and seeded choices with answer keys, review notes, and sound charts.
Behavior Reward Chart Generator Create a positive behavior reward chart with observable goals, age-aware space checks, printable layouts, and coaching notes for adults.
Bicycle Tire Pressure Calculator Calculate front and rear bicycle tire pressures from rider weight, measured tire and rim width, surface, setup, temperature, and safety limits.
Big Five 10-Item Proxy Assessment Build a quick Big Five proxy profile from 10 statements, then check two-item pair gaps so midpoint scores do not look more settled than they are.
Big Five Aspect Scales (BFAS) Assessment Profile ten Big Five aspects from 100 BFAS-style statements, compare domain-pair gaps, and check reverse-keyed answers before sharing.
Big Five Assessment Score a 50-item IPIP Big Five profile, compare five factor means and item spread, and review non-normed trait signals before sharing.
Big Five Assessment Comparator Compare Big Five assessment routes by item budget, trait detail, source basis, and fit score before choosing a domain, facet, or aspect form.
Big Five Inventory-2 Style Proxy Assessment Map 60 BFI-2-style proxy statements into five domain means and 15 facet scores, with spread checks and answer review for cautious reading.
Bike Chain Length Calculator Calculate bike chain cut length from chainstay, gear teeth, suspension growth, and stock links with formula comparison and fit warnings.
Bill Split Calculator Divide a shared receipt into exact-cent or rounded payer amounts, showing how discounts, tax, service charges, and tip basis change the split.
Billable Hours Calculator Calculate billable hours from timer, duration, or clock rows, then review rounding, write-downs, realization, client totals, and exports.
Billable Utilization Target Calculator Plan a billable utilization target from capacity, revenue goals, bill rate, realization, benchmarks, and protected non-billable time.
Billing Document Generator Draft invoices or purchase orders from line items and tax, then review parsed rows, subtotal, tax, total, and copy-ready text before handoff.
Binary Decimal Hex Converter Convert binary, decimal, hex, octal, and Base36 integers with signed-width checks, bit fields, endian previews, and byte-level output.
Bingo Card Generator Create printable bingo cards from your own prompt list, check unique-item coverage, and export seeded boards, caller decks, and records.
Birthday Calculator Find exact age, birthday countdowns, leap-day observance, milestone ledgers, and planning windows from any birth and reference date.
Bitwise Operations Calculator Calculate fixed-width bitwise masks, shifts, rotations, flag tests, signed readouts, and bit-lane changes with binary and hex checks.
Blacklist Checker (DNSBL/RBL) Check a mail host or sender IP against DNSBL/RBL lists, separating real listings, policy signals, resolver warnings, and TXT evidence.
Bleach Dilution Calculator Mix a bleach dilution by ppm, percent, or ratio, with measured bleach and water volumes plus stock-strength and safety checks.
Block Randomization Schedule Generator Generate a reproducible block randomization schedule with arm ratios, strata, seeded blocks, balance checks, and review-ready exports.
Board Game Sleeve Count Calculator Turn a board-game card manifest into sleeve pack counts, fit warnings, spare sleeves, cost totals, and box-bulk checks before buying.
Body Composition Calculator Estimate body-fat percentage from tape measurements, compare Navy, RFM, and BMI-age methods, and plan lean-mass, waist, and target-weight checks.
Body Mass Index (BMI) Calculator Calculate adult BMI from height and weight, compare WHO, Asia-Pacific, and NIH/CDC bands, and add waist and target-weight context.
Body Metrics Calculator Compare BMI, waist ratios, body-fat estimates, lean and fat mass, BSA, and reference weights with risk bands and spread warnings.
Body Recomposition Calculator Plan a body recomposition target from weight, body-fat change, lean-mass assumptions, runway, calories, protein, and uncertainty flags.
Body Surface Area Calculator Calculate body surface area from height and weight, compare BSA formulas, and check caps, BMI gates, reference lanes, and dose rounding.
Bodyweight Workout Guide Build a no-equipment bodyweight workout from your goal, time, level, and movement limits with swaps, readiness checks, and charted timing.
Bonus Pool Allocation Calculator Allocate one bonus pool across eligible participants with weights, proration, caps, floors, rounding, residuals, and balance warnings.
Bonus Tax Calculator Establish a 2026 U.S. bonus take-home estimate with supplemental withholding, FICA wage-base handling, pre-tax deferrals, and state/local assumptions.
Boxing Round Timer Run boxing-style round timers with work/rest planning, warning bells, live phase controls, round-load charts, session logs, and exports.
Boxing Scoreboard Tracker Track a boxing scorecard round by round, separate warnings from point deductions, and export score totals, event ledgers, charts, or JSON.
Braille Alphabet Quiz Practice Braille letters and digits with seeded drills, missed-answer review, repeatable sessions, score charts, and downloadable result files.
Bread Water Temperature Calculator Calculate bread water temperature from DDT, flour, room, preferment, and mixer friction with practical bands and batch calibration.
Break-Even Calculator Find the unit sales needed to break even or hit a profit target from fixed costs, price, variable cost, stress cases, and safety margin.
Breast Milk Storage Time Calculator Calculate breast milk use-by times for fresh, thawed, warmed, or leftover milk with storage windows, label text, and care-context cautions.
Breathing Pacer Run a browser-local breathing pacer with custom inhale, hold, and exhale timing, live ring cues, phase charts, timeline history, and exports.
Brief Resilience Scale (BRS) Assessment Score the six-item BRS, review the 1-5 mean band, reverse-scored items, weakest recovery cues, and shareable chart or answer exports.
Brief Resilient Coping Scale (BRCS) Assessment Score the four BRCS coping items, place the 4-to-20 total in low, medium, or high resilient-coping bands, and review item gaps.
Brief Rumination Response Scale Assess a 10-item rumination pattern, compare brooding with reflective pondering, and turn top loops into a non-diagnostic follow-up note.
Brief Self-Control Scale (BSCS) Assessment Assess 13-item trait self-control, see the total, mean score, reflection lanes, reverse scoring, and retest cues for comparable check-ins.
Bug Report Generator Draft a tracker-ready bug report with Markdown, triage fields, a reproducibility checklist, and local privacy-pattern warnings before filing.
Build Artifact Storage Calculator Estimate retained CI artifact storage from build cadence, retention, active refs, compression, caches, reserve, and quota headroom.
Bulk Sender Requirements Checker Check bulk sender readiness for Gmail, Yahoo, and Outlook with DNS, header, complaint-rate, unsubscribe, and DMARC alignment evidence.
Business Days Calculator Count business days or shift a deadline with custom weekend rules, pasted holidays, endpoint controls, and skipped-date ledgers.
CAA Validation Report Check a hostname's CAA policy with CNAME and parent-DNS lookup evidence, wildcard rules, issuer findings, and resolver comparison notes.
CBT-I Sleep Diary Tracker Track CBT-I sleep diary nights, calculate sleep efficiency and wake drift, review trends, and keep saved rows in the current browser.
CBT-I Sleep Window Calculator Plan a CBT-I sleep window from diary sleep and a fixed wake time, with projected efficiency, safety-floor checks, and weekly adjustment cues.
CD-RISC-10 Resilience Proxy Assessment Run a CD-RISC-10-style resilience proxy, not an official score, with 0-40 bands, support-domain mapping, and prior-score change checks.
CDN Cache Hit Savings Calculator Estimate CDN cache-hit savings from traffic, cacheable share, origin costs, CDN charges, payback, and break-even hit-rate checks.
CI Failure Log Analyzer Analyze a failed CI job log, rank line-numbered failure clues, group stages, suggest next checks, and mask secret-like snippets before sharing.
CI Runner Capacity Calculator Estimate CI runner slots from job volume, occupied minutes, retry load, burst pressure, utilization headroom, and queue-wait targets.
CIDR Allowlist Risk Checker Review CIDR allowlists for broad source ranges, sensitive ports, stale dates, missing owners, overlaps, and scored cleanup evidence.
CODEOWNERS Coverage Analyzer Check CODEOWNERS coverage for a pull request, spot missing, ownerless, or catch-all ownership gaps, and export a review-ready fix queue.
CORS Policy Risk Checker Check CORS response headers against origin trust, credentials, caching, exposed headers, and private-network access with scored fixes.
CPS Test Measure clicks per second with timed target runs, gap filtering, accuracy and consistency checks, pace charts, and browser-local trial history.
CSP Header Generator Draft a Content Security Policy header with nonce, hash, or allowlist scripts, directive posture checks, 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 Build CSS gradients with draggable stops, live geometry, modern color-space options, syntax checks, and copy-ready CSS output.
CSS Minifier Minify CSS in your browser, preserve token-sensitive syntax, compare byte savings, and review parser, source-map, and compatibility warnings.
CVC Word Practice Sheet Generator Build printable CVC word practice sheets from short-vowel lists, with family filters, sound boxes, teacher ledgers, answer keys, and review notes.
Cache TTL Hit Rate Calculator Model cache TTL hit rate from request reuse, fixed or sliding expiry, purge loss, freshness pressure, target TTL, and latency savings.
Cafe Drink Cost Calculator Price a cafe drink from recipe lines, waste, packaging, labor, overhead, card fees, and margin targets with rounded menu-price checks.
Caffeine Content Calculator Estimate caffeine from drink size, label values, servings, body weight, daily guides, and half-life timing with charts and warnings.
Caffeine Cut-off Calculator Calculate the latest caffeine cut-off before bed from dose, half-life, absorption, and residual targets, with candidate-time and daily-limit checks.
Cake Servings Calculator Plan cake servings from guest count, cut style, pan or tier size, and reserve, with batter, icing, shortage, and held-top-tier estimates.
Calendar ICS Generator Create an import-ready .ics event file with escaped calendar text, timezone modes, reminders, validation checks, JSON, and downloads.
Calories Burned Calculator Estimate calories burned from weight, activity MET, duration, and model choice, with active-only burn, weekly credit, and target timing.
Camera Memory Card Capacity Calculator Plan camera memory cards from stills, video bitrate, reserve, dual-slot mode, and speed class with capacity and write-speed checks.
Capacitor Calculator Calculate parallel-plate capacitance from geometry and dielectric choices, then check charge, stored energy, field stress, and voltage margin.
Capacity Upgrade Brief Report Build a capacity upgrade brief from service utilization, growth, threshold timing, lead time, and ranked options with charts and approval notes.
Capital Gains Tax Calculator Estimate U.S. capital gains tax from sale proceeds, basis, income, losses, and gain treatment with federal bands, NIIT, and scenarios.
Car Loan Calculator Calculate a car loan payment from price, APR, term, trade equity, tax, fees, and extra principal with payoff and cost warnings.
Car Tire Pressure Calculator Plan cold tire pressure from placard or vehicle presets, loaded weight, axle share, tire width, and temperature drift with add-or-bleed steps.
Carb Loading Calculator Plan race-week carbohydrate targets from body weight and event length, with daily grams, meal blocks, ramp timing, and gut-tolerance flags.
Carpet Calculator Estimate carpet order quantity from room size, roll width, cut direction, waste, pattern repeat, and costs with seam and offcut checks.
Case Converter Reshape headings, identifiers, filenames, and slugs into 13 case styles with line scope, acronym handling, and accent-folded code output.
Cash Flow Runway Calculator Calculate cash runway from bank cash, expected collections, outflows, growth, reserve floors, and scenarios with funding-gap cues.
Ceiling Fan Size Calculator Choose a ceiling fan size from room area, airflow target, ceiling height, moisture rating, clearance, downrod guidance, and run-cost checks.
Cement Board Sheets Calculator Estimate cement board sheets for floors, walls, and shower surrounds with waste, spares, fasteners, tape, thinset, membrane, and cost checks.
Center for Epidemiologic Studies Depression (CES-D-20) Screen past-week depressive symptoms with CES-D-20 scoring, cutoff context, symptom clusters, high-intensity items, and local exports.
Ceph Storage Capacity Calculator Estimate Ceph usable capacity from node sizes, replica or erasure-code protection, failure-domain reserve, nearfull policy, and PG hints.
Certificate Inventory Expiry Checker Review certificate inventory CSV rows in your browser, rank expiry urgency, owner gaps, manual renewal risk, and public TLS lifetime findings.
Certificate Renewal Window Calculator Plan TLS certificate renewals from population, validity, lead time, spread, daily capacity, retry reserve, and safety buffer before expiry.
Certificate Signing Request (CSR) Decoder Decode a CSR locally, check SAN coverage and key strength, and review signature, fingerprints, expected-host matches, and readiness notes.
Certificate Signing Request (CSR) Generator Generate an RSA CSR in your browser, review SANs, key usage, fingerprints, and OpenSSL config, then export PEM without sending keys.
Certificate Transparency Checker Check a TLS certificate fingerprint against public CT data, compare hostname and issuer evidence, and keep revocation or reporting clues in view.
Change Risk Assessment Reporter Assess an IT change from impact, likelihood, disruption, rollback, validation, monitoring, and communications to produce a residual-risk report.
Changelog Generator Draft a release changelog from notes, Markdown sections, or Conventional Commit subjects with category grouping, SemVer review, and copy-ready Markdown.
Checklist and Log Generator Turn item lines into a checklist, to-do list, or reading log with clean Markdown drafts, review tables, and CSV, DOCX, and JSON exports.
Chess Clock Timer Run a two-player chess clock with Fischer, Bronstein, simple delay, low-time cues, move logs, and a balance chart for casual games.
Childcare Cost Calculator Estimate monthly and annual childcare costs from tuition, nanny hours, extras, subsidies, income share, and a 2025 federal care-credit scenario.
Circle Time Routine Planner Build an age-aware circle time routine from theme, group size, duration, materials, participation style, rhythm checks, and exports.
Circuit Training Timer Build a circuit training timer with named stations, work and transition timing, live cues, coaching checks, charts, and a shareable run sheet.
Cisco ACL Generator Generate Cisco IPv4 ACL commands from flow rows, with wildcard conversion, sequence planning, expansion checks, and safety review tables.
Cisco Interface Config Generator Generate Cisco interface config for routed, access, or trunk ports, with VLAN validation, syntax profiles, command audit, and copy-ready CLI.
Citation Generator Create citation drafts for web, book, article, legal, dataset, media, and AI sources with style entries, in-text forms, and review notes.
Classroom Resource Pack Generator Build classroom resource packs from grade, topic, objectives, time, materials, and support notes with draft sections and teacher handoff checks.
Classroom Supply Budget Calculator Plan classroom supply orders from enrollment, group kits, reusable stock, pack rounding, discounts, tax handling, and budget caps.
Cleaning Quote Calculator Price a residential cleaning job from rooms, condition, add-ons, travel, labor cost, and margin checks with quote notes ready to copy.
Click Counter Count repeated events with a large click target, fixed batch steps, correction tracking, session peak checks, and exportable handoff reports.
Cloud Egress Cost Calculator Estimate cloud data transfer spend from monthly volume, cache savings, tiered rates, request add-ons, peak months, and budget variance.
Cloud NAT Gateway Cost Calculator Estimate monthly cloud NAT costs from gateway hours, processed traffic, endpoint offload, egress, cross-zone transfer, IPv4 charges, and budget cap.
Cloud Tag Coverage Analyzer Audit cloud inventory tags, find resources missing required keys or allowed values, and export coverage, gap ledgers, charts, and cleanup queues.
Cloud-init Network Config Generator Build cloud-init version 2 network YAML for static VM NICs, with CIDR, routes, DNS, MAC matching, and validation warnings before boot.
Cloze Worksheet Generator Turn a reading passage into a printable cloze worksheet with targeted blanks, a shuffled word bank, answer key, teacher checks, and exports.
Coffee Bag Yield Calculator Plan how long a coffee bag lasts from weight, dose or brew water, waste, daily servings, price, and reorder timing with serving cost.
Coffee Brew Planner Plan a coffee brew from cup yield and ratio, then get coffee dose, total water, bloom timing, projected TDS, and adjustment cues.
Coffee Brew Suite Plan pour-over, French press, espresso, moka, or cold brew recipes with dose math, brew schedules, strength checks, and dial-in cues.
Coffee Catering Quantity Calculator Plan coffee for an event by estimating drinkers, brewed gallons, regular and decaf batches, supplies, station pace, and cost per guest.
Coffee Cupping Score Calculator Score a coffee cupping sample with quarter-point attributes, cup-based support deductions, defect penalties, bands, and audit tables.
Coffee Drink Calorie Calculator Estimate coffee drink calories from milk, syrups, cream, toppings, and caffeine assumptions, then compare recipe changes before logging.
Coffee Extraction Yield Calculator Calculate coffee extraction yield from dose, beverage mass, and TDS or Brix, with target bands, bypass estimates, taste cues, and exportable brew logs.
Coffee Extraction and Strength Calculator Calculate coffee extraction yield and cup strength from dose, beverage mass, and TDS or Brix, with target bands, warnings, and dial-in moves.
Coffee Freshness Window Checker Check a coffee bag's roast-date freshness window with brew method, roast level, grind, storage exposure, use pace, and timeline cues.
Coffee Roast Yield Loss Calculator Calculate coffee roast yield loss from green and roasted weights, then plan target output, QC pulls, package counts, and sellable-unit cost.
Coffee Strength Calculator Measure coffee strength from TDS or Brix readings, estimate extraction yield, and compare the brew with filter, immersion, or espresso targets.
Coffee Water Recipe Calculator Build a coffee water recipe from GH, KH, TDS, and batch size, with RO dilution, mineral gram targets, charts, and espresso cautions.
Coffee to Water Ratio Calculator Plan coffee-to-water ratios from a dose or target yield, then estimate brew water, cup yield, batch scaling, and method-window warnings.
Cognitive Reflection Test (CRT-3) Assessment Take the classic three-item Cognitive Reflection Test, separate correct answers from intuitive lures, and review a 0 to 100 reflection index.
Cognitive Reflection Test (CRT-7) Assessment Take a seven-item Cognitive Reflection Test, compare classic and extension items, separate lures from other misses, and review rethink cues.
Coin Flipper Flip a fair, biased, or seeded coin locally, then compare streaks, expected counts, probability gaps, charts, and the session ledger.
Cold Brew Dilution Calculator Plan cold brew dilution from concentrate ratio to ready-drink serving yield, with water or milk splits, ice melt, service loss, and batch sizing.
College GPA Calculator Project college GPA from current courses and prior transcript credits, with repeat, pass/fail, standing, target-gap, and grade-lift checks.
Color Palette Generator Build a HEX color palette from one seed, compare WCAG contrast pairs, and copy usable swatches, CSS tokens, charts, or JSON reports.
Comma-Separated Values (CSV) Converter Convert CSV-like text into clean tables, profiles, JSON, SQL, XML, and spreadsheet-ready exports while checking headers and row shape.
Commute Cost Calculator Estimate annual commute cost for driving, transit, or hybrid schedules with fuel, parking, tolls, fares, time value, and scenario charts.
Companion Planting Checker Screen a crop list for companion planting conflicts, family repeats, water mismatches, shade pressure, and layout moves with confidence cues.
Compost Carbon-to-Nitrogen (C:N) Ratio Calculator Calculate a compost C:N ratio from browns, greens, weights, and moisture, then see balance warnings, repair amounts, and dry-matter charts.
Compound Interest Calculator Project compound-interest growth with recurring deposits, taxes, fees, inflation, goal timing, detailed schedules, and rate-sensitivity charts.
Concrete Calculator Estimate concrete volume for slabs, footings, post holes, or takeoffs with waste, bag counts, ready-mix rounding, and cost checks.
Conduit Fill Calculator Check conduit fill for EMT, IMC, RMC, and PVC from a conductor schedule, fill basis, same-type sizing, and pull-planning warnings.
Config Drift Checker Compare intended and observed configuration text, classify changed, missing, extra, ignored, and priority drift, and export a remediation ledger.
Container Image Pull Time Calculator Estimate container image pull time from size, cache coverage, bandwidth, pull lanes, unpack speed, retries, and rollout optimization levers.
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 targets, then compare margin, markup, and break-even risk.
Conventional Commit Messages Checker Check Conventional Commit headers or full messages, catch rule findings, and map valid commits to major, minor, patch, or no release impact.
Cooked Yield Shrinkage Calculator Turn AP, trim, cooked, and portion weights into cooked yield, shrinkage, true cooked cost, portion cost, and next-batch purchase quantities.
Copenhagen Burnout Inventory (CBI) Assessment Score CBI personal, work, and client-related burnout on 0-100 scales, compare PUMA anchors, and identify the highest-burden answers.
Corrected Age (Preterm) Calculator Calculate a preterm baby's corrected age from due date or gestational age, then map milestone windows, age-use notes, and handoff timing.
Cost Per Hire Calculator Calculate cost per hire from recruiting spend and hires, then compare cost shares, target variance, software allocation, and recruiting ratio.
Count and Color Sheet Generator Create count-and-color worksheets for 0-20 practice with printable rows, answer keys, color plans, seeded mixes, and a count-load chart.
Countdown Timer Count down to a deadline in local, UTC, fixed-offset, or IANA time with buffers, milestone rows, progress charts, and elapsed-time output.
Countertop Slab Yield Calculator Estimate countertop slab reserves from runs, islands, backsplashes, cutouts, and slab size with yield, seam-risk, and cost checks.
Country Flags Quiz Practice country flag recognition by world or regional set, replay seeded rounds, and review missed answers with score charts and downloads.
Country Information Lookup Find country details from a name, ISO code, calling code, currency, capital, or region, with match ranking, source status, maps, and scale charts.
Country Take-Home Pay Comparator Compare country salary offers after employee tax, payroll contributions, exchange rates, and cost indexes with buying-power ranks and source notes.
Creatine Loading Calculator Calculate creatine loading or maintenance from body weight, serving split, label units, health context, and container supply checks.
Credit Card Calculator Estimate a credit card payoff timeline from balance, APR, payments, new charges, and target dates, with interest totals and warning cues.
Credit Card Number Generator Generate Luhn-valid sandbox card numbers with optional CVV, expiry, BIN/IIN prefixes, masking, seeded replay, and prefix mix reports.
Credit Card Number Validator Check payment-card numbers with Luhn, issuer-length review, batch cleanup, rule traces, charts, and clear cautions for handling full PANs.
Cricket Scoreboard Tracker Score a cricket innings ball by ball with legal-ball rules, extras, wickets, chase rates, projections, scoring worm, and event ledger.
Cron Expression Parser Parse a Unix cron expression in your browser, expand five fields, preview upcoming runs, and catch timezone, macro, day-rule, and dialect risks.
Cronbach Alpha Calculator Calculate Cronbach's alpha from survey response tables, with reverse scoring, missing-data choices, item diagnostics, and report wording.
Crontab Generator Build user or system crontab lines from presets, pasted entries, or manual fields with syntax warnings, install notes, and exports.
Crop Rotation Planner Plan crop rotations by bed history and plant family, with risk labels for disease carryover, feeder balance, cover-crop breaks, and future seasons.
Cross Stitch Fabric Size Calculator Calculate cross stitch fabric size from stitch count and fabric count, then check margins, shrink reserve, rounding, and stock fit.
Crossword Puzzle Generator Generate a custom crossword from answer-clue lines, compare crossings and unused entries, then download puzzle sheets and answer keys.
Current Time Check your current time from the browser clock, freeze one timestamp, and compare local, UTC, Unix, ISO, offset, DST, and midnight clues.
Cut Down, Annoyed, Guilty, Eye-opener (CAGE) Assessment Screen four CAGE alcohol cues, compare 1+, 2+, and 3+ Yes thresholds, and review Eye-opener patterns with follow-up guidance.
DANE TLSA Validation Report Validate DANE TLSA records for mail or TLS services with owner-name routing, DNSSEC AD checks, digest comparison, and readiness scoring.
DARVO Pattern Reflection Reflect on one confrontation for DARVO-style denial, attacks, and role reversal with 18 cue ratings, tactic means, and safety-minded notes.
DB Replica Lag Catch-up Calculator Estimate replica lag catch-up from backlog, write rate, and apply throughput, then compare target windows, retained-log risk, and throttle or boost scenarios.
DERS-18 Emotion Regulation Proxy Check Review last-two-week emotion-regulation strain with an 18-item DERS-style proxy, six domain scores, 4+ item cues, and browser-side scoring.
DHCP Scope Calculator Plan a DHCP scope from subnet, pool, exclusions, reservations, growth, lease time, and utilization headroom before clients run short.
DKIM DNS Record Generator Generate a DKIM DNS TXT record from a selector, domain, and public key with key-strength checks, split-string guidance, and DNS publish fields.
DKIM Validation Report Validate a DKIM selector in public DNS, inspect the TXT key record, key strength, testing flags, and resolver evidence before troubleshooting mail authentication.
DMARC DNS Record Generator Build a DMARC TXT record with owner labels, policy tags, report URIs, external authorization notes, rollout warnings, and DNS split guidance.
DMARC Validation Report Validate a domain's DMARC record in public DNS, review policy alignment, report destinations, rollout signals, and control scores before enforcement changes.
DNS Cache Capacity Calculator Estimate DNS resolver cache memory from QPS, hit rate, distinct inserts, TTL, DNSSEC overhead, headroom, and upstream-load charts.
DNS Configuration Report Audit a domain's public DNS records, compare resolver snapshots, and spot missing authority, mail, address, policy, TTL, or timing risks.
DNS Delegation Trace Analyzer Trace a hostname through delegation, aliases, DNSSEC clues, resolver drift, and negative-cache timing before chasing web, mail, or certificate failures.
DNS Denial Proof Report Build a DNS denial proof for NXDOMAIN or NODATA, separating resolver evidence, NSEC/NSEC3 checks, CD-bypass splits, and retry timing.
DNS Glue & Delegation Check Audit DNS glue and delegation for a domain, compare public resolver views, and turn NS address, CNAME, or DS gaps into repair evidence.
DNS Propagation Checker Check DNS propagation across public resolvers, compare expected answers, and review TTL, DNSSEC, ECS, latency, and holdout clues.
DNS Record Enumerator Enumerate public DNS records for a domain, URL, email domain, or IP with resolver evidence, mail-auth checks, DNSSEC clues, and action flags.
DNS Record Lookup Look up DNS records for a domain, host, or IP with Google or Cloudflare DoH, TTL charts, DNSSEC flags, raw responses, and JSON exports.
DNS TTL Change Window Calculator Plan a DNS TTL cutover window with drain timing, negative-cache checks, resolver-load warnings, and exportable runbook evidence.
DNS Wildcard Behavior Check Check DNS wildcard behavior with random public resolver probes, closest-encloser clues, branch boundaries, and cache-aware result tables.
DNS Zone File Generator Draft DNS zone files from SOA, nameserver, mail, DNSSEC, and host records with TTL checks, ledger rows, and lint-ready exports.
DNS Zone File Validator Validate a DNS zone file before import, catching SOA/NS gaps, TTL risks, CNAME conflicts, mail-policy warnings, and normalized records.
DNSSEC Validator Validate a domain's DNSSEC chain with DNSKEY, DS, RRSIG, resolver AD comparison, signature timing checks, and a pass-rate report.
DOCX Converter Convert a DOCX in your browser to clean web, text, table, EPUB, and audit outputs with local processing, image controls, and package warnings.
DORA Metrics Analyzer Analyze deployment CSV rows into DORA throughput, failure, recovery, and rework signals with warnings, charts, and exportable review tables.
DR Runbook Report Build a disaster recovery runbook from RTO, RPO, owners, dependencies, recovery steps, validation checks, and readiness gates for review.
Data Transfer Rate Converter Convert data transfer rates between bits, bytes, SI, and IEC units, model overhead, and test payload ETAs against a time window.
Database Connection Pool Calculator Size a database connection pool across app instances and workers, then check headroom, deploy surge, full-pool risk, and per-holder caps.
Database Index Rollout Planner Plan a database index rollout with engine-specific SQL, build-time estimates, risk scoring, guardrails, and rollback-ready runbook notes.
Database Migration Risk Checker Check SQL migration risk before release, flag destructive DDL, blocking index builds, large-table backfills, and rollout actions.
Database Storage Growth Calculator Plan database storage runway from table growth, indexes, logs, backups, replicas, headroom, autoscale ceilings, and cost signals.
Date & Time Difference Calculator Calculate elapsed time between dates with timezone offsets, workday counts, business-window overlap, checkpoint schedules, and exports.
Debt Repayment Calculator Plan debt payoff month by month from balances, APRs, minimums, and extra cash, then compare strategies, interest savings, and payoff milestones.
Decibel Calculator Calculate decibel levels from sound pressure, power, voltage, or custom references, then compare ratios, inverse values, and dB ladders.
Deck Materials Calculator Estimate deck boards, framing, posts, footings, railing, stairs, fasteners, waste, and budget with cut plans and layout checks.
Decodable Reading Passage Generator Generate a decodable reading passage from a phonics focus, then check running-word coverage, target words, review flags, and teacher notes.
Dehumidifier Size Calculator Size a dehumidifier for damp rooms from area, humidity, temperature, drainage, runtime, bucket handling, and energy-cost estimates.
Dependency License Flags Checker Check dependency license evidence against allowed, review, and denied policies with SPDX expression triage, scope filters, and action queues.
Dependency Update Risk Analyzer Triage dependency update rows by SemVer, runtime scope, security status, tests, and compatibility, then export owner-review queues and charts.
Depression Anxiety Stress Scales (DASS-21) Assessment Complete a DASS-21 past-week symptom screen with doubled subscale bands, highest-pressure item 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, then review subscale patterns, charts, and private item answers.
Depth of Field Calculator Plan depth of field from lens, aperture, sensor format, focus distance, circle of confusion, background blur, framing, and motion checks.
Dew Point Calculator Calculate dew point from temperature and relative humidity, then compare surface margin, vapor pressure, comfort, and condensation risk.
Diaper Usage Calculator Estimate diaper usage, stock runway, reorder timing, and pack costs from daily changes, pack size, current stock, buffers, and fit checks.
Dice Roller Roll tabletop dice notation for play or odds checks with advantage, rerolls, explosions, target rates, traces, charts, and a local log.
Diceware Passphrase Generator Generate a Diceware passphrase from EFF long-list rolls, then check entropy, manual dice evidence, length limits, and site policy fit.
Dimensional Weight Shipping Calculator Calculate dimensional shipping weight from packed box size, actual weight, carrier divisors, rounding rules, and packaging comparisons.
Discount Calculator Calculate an all-in discount total with stackable codes, coupons, shipping, tax, quantity, target gaps, and offer-pressure charts.
DoH Query Packet Crafter Craft a DNS-over-HTTPS query packet, compare GET or POST replay data, inspect EDNS/DNSSEC flags, and decode live resolver replies.
Docker Compose Generator Build Docker Compose YAML for one service, with image/build choices, port exposure, .env secret references, healthchecks, networks, and review notes.
Docker Compose Healthchecks Checker Check a Docker Compose file for missing or weak healthchecks, readiness-gate blockers, restart gaps, and role-based coverage before release.
Dockerfile Generator Build a Dockerfile and .dockerignore for Node.js, Python, Go, or Java services, with cache mounts, healthchecks, and hardening review notes.
Dockerfile Security Basics Checker Check a Dockerfile for risky defaults, line-level findings, and release-gate warnings covering base images, secrets, users, packages, and healthchecks.
Dog Grooming Quote Calculator Price a dog grooming visit with size, coat, handling, add-ons, margin checks, intake cautions, and customer-ready quote text.
Drip Irrigation Zone Flow Calculator Calculate drip irrigation zone flow from layout, emitter count, or measured flow, with pressure correction, reserve margin, and split checks.
Drop Ceiling Grid Materials Calculator Estimate drop ceiling tiles, grid pieces, hanger wire, fasteners, cartons, and rough material cost from room size and panel module.
Dryer Vent Length Calculator Calculate dryer vent equivalent length with elbow, flex, and hood allowances, then compare the route with a selected limit and cleaning cues.
Drywall Materials Calculator Estimate drywall sheets, order area, compound, tape, screws, corner bead, weight, and cost from room dimensions, wall runs, or known area.
Duplicate Line Remover Clean a one-entry-per-line list in your browser, remove repeats with case and whitespace rules, and audit kept or dropped rows.
Dysfunctional Beliefs and Attitudes About Sleep (DBAS-16) Assessment Assess DBAS-16 sleep beliefs on a 0 to 10 scale, compare the mean with the 3.8 reference, and prioritize beliefs to review next.
ECMP Path Capacity Calculator Estimate 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 quadrant lens, cue contrasts, and browser-side scoring.
EDNS Client Subnet (ECS) Tester Check whether a DNS name changes under EDNS Client Subnet hints with no-hint controls, echoed scope, resolver signals, and exports.
EDNS Options Inspector Inspect a domain's EDNS OPT response across public DoH resolvers with DNSSEC, NSID, ECS, padding, packet sections, and replay evidence.
EMOM Workout Timer Plan an EMOM workout with minute-by-minute targets, rest-buffer checks, live cues, finish logging, pacing charts, and downloadable JSON.
ENV Converter Convert .env files to YAML, JSON, runtime env, INI, and properties output with parser traces, expansion checks, and secret-like value review.
EPQ-R Style PEN Personality Proxy Assessment Take a 28-item EPQ-R-style personality proxy, compare P, E, N, and L scores, and audit keyed answers before sharing the profile.
EPW-Style Daytime Sleepiness Proxy Assess usual daytime sleepiness with eight EPW-style dozing ratings, then review the 0-24 total, reference zone, safety cue, and context pattern.
EQ-5D-5L Health Status Survey Record an EQ-5D-5L health state for today, compare US 2019 and England 2018 utilities with EQ VAS, and see which dimension drives burden.
EV Charger Circuit Load Calculator Size an EV charger branch circuit from EVSE current, breaker choice, panel headroom, connection caps, and conductor voltage-drop checks.
EV Range Calculator Calculate practical EV range from battery capacity, charge reserve, consumption units, driving profile, trip distance, and sensitivity checks.
Early Math Worksheet Generator Generate printable early math worksheets with seeded counting, ten-frame, missing-number, pattern, and fraction prompts, answer keys, and skill charts.
Edinburgh Postnatal Depression Scale (EPDS) Assessment Score EPDS answers for the last 7 days, review 0 to 9, 10 to 12, and 13+ follow-up cues, and keep Question 10 safety flags visible.
Effective Interest Rate Calculator Convert quoted interest rates to effective annual yield, compare compounding bases, and check equivalent quotes, real yield, and holding-period return.
Effective Tax Rate Calculator Calculate an effective tax rate from bracket presets or manual totals, then compare income-tax-only, all-in, marginal, and side-income views.
Electric Vehicle (EV) Charging Time Calculator Estimate EV charging time from battery size, state of charge, charger limits, taper, derates, cost, added range, and departure fit.
Electrical Box Fill Calculator Calculate NEC-style box fill from conductors, grounds, yokes, clamps, supports, and terminal blocks with cubic-inch margins and size options.
Electrical Panel Load Calculator Estimate home electrical service demand in amps from floor area, appliances, HVAC, EV charging, and added loads with target headroom checks.
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 HTML, plain-text output, normalized contact links, width checks, and compatibility audit notes.
Employee Total Cost Calculator Estimate the full employer cost of a role from pay, burden, benefits, equipment, software, overhead, and productive-hour assumptions.
Employee Turnover Rate Calculator Calculate employee turnover for a reporting period, compare exit categories, and catch denominator or headcount reconciliation issues.
Endurance Fuel Planner Plan run or ride fueling with carb, fluid, sodium, bottle, gel, and reminder targets that expose shortfalls before training or race day.
Environment Variable Inventory Checker Audit required environment variables against pasted or uploaded inventories with redacted missing, blank, placeholder, duplicate, and secret-like findings.
Ephemeral Port Exhaustion Calculator Estimate ephemeral port exhaustion from hot-destination connection churn, source address inventory, reuse hold time, reserves, and NAT caps.
Epoch Time Converter Convert epoch seconds, milliseconds, or wall-clock dates into UTC and selected-zone timestamps with date parts and year-progress checks.
Epworth Sleepiness Scale (ESS) Assessment Score usual daytime dozing with the ESS, review the 0 to 24 sleepiness band and driving cue, and export charts or answer rows when needed.
Error Budget Burn Rate Calculator Calculate SLO burn rate from current error ratio and remaining budget, then compare runway, alert windows, and mitigation targets.
Error Budget Calculator Calculate how much SLO error budget is used from observed traffic, bad events, burn gates, and runway estimates before release review.
Espresso Shot Planner Plan an espresso recipe from dose, ratio, yield, time, temperature, and pressure, then log pulls against flow and tolerance bands.
Ethernet Frame Efficiency Calculator Calculate Ethernet frame efficiency from payload size, VLAN tags, and wire-time overhead, with goodput, frame-rate, and target-fit checks.
Event Portable Toilet Calculator Estimate event portable toilet rentals from peak crowd, duration, alcohol, food, weather, ADA coverage, handwashing, servicing, and budget.
Event Schedule Generator Build an event run sheet from pasted rows or CSV, detect overlaps and tight handoffs, and export timelines, tables, JSON, and ICS.
Event Seating Capacity Calculator Estimate event seating capacity from room size, fixed zones, aisle reserve, layout density, occupancy caps, staff count, and attendance target.
Exchangeable Image File Format (EXIF) Viewer & Editor Inspect image EXIF locally, flag GPS, serial, timestamp, and author risks, then export a stripped or edited JPEG copy when supported.
Expense Policy Checker Review expense rows against receipt thresholds, category caps, mileage rates, duplicates, and blocked categories with evidence-trail flags.
Extensible Markup Language (XML) Converter Convert XML into JSON, JSON Lines, tables, SQL inserts, and formatted XML with local parsing, record-path checks, and schema review.
Extension Cord Voltage Drop Calculator Estimate extension cord voltage drop, load-end voltage, heat loss, and one-way length limits with AWG, temperature, and rating checks.
Faraid Calculator Calculate Faraid estate shares after debts, expenses, and capped wasiat, with heir rows, residue handling, profile comparisons, and review notes.
Fat-Free Mass Index (FFMI) Calculator Calculate FFMI from weight, height, and body-fat or lean-mass readings, with normalized comparison bands, sensitivity checks, and goals.
Favicon Generator Turn one logo into favicon PNGs, favicon.ico, HTML links, and manifest icons with local rendering, size checks, previews, and ZIP download.
Feature Flag Cleanup Checker Review feature flag inventories in your browser for stale rollouts, code references, owner gaps, dependencies, and archive-ready cleanup work.
Fence Materials Calculator Estimate fence posts, infill, rails, concrete bags, gate hardware, waste, spacing impact, and material cost from a measured run.
Fertilizer Solution Mix Calculator Calculate an N-P-K fertilizer solution recipe from ppm targets, reservoir volume, soluble grades, blend fit, and stock-density warnings.
Fiber Link Budget Calculator Calculate a fiber link budget from optic power, route loss, connectors, splices, passives, reserve, and overload limits with margin ledgers.
Field Service Trip Charge Calculator Price a field-service trip charge from route distance, drive time, labor, vehicle cost, margin, minimums, premiums, and repair-credit policy.
Field of View Calculator Plan camera framing from sensor size, focal length, and subject distance with angle-of-view math, target-fit checks, and lens sweep data.
File Encryptor & Decryptor Encrypt or decrypt a local file in your browser with AES-GCM, Argon2id/PBKDF2 controls, recovery metadata, and audit exports.
File Hash Generator Hash a local file in your browser, compare SHA-2, SHA-3, MD5, SHA-1, or RIPEMD-160 digests, and export a session ledger for checks.
File Transfer Time Calculator Estimate file transfer time from size and sustained bandwidth, then test overhead, compression, RTT, TCP window, packet loss, and deadline fit.
File and Disk Size Converter Convert file or disk sizes across decimal and IEC units, then estimate usable space, allocation slack, and common storage fit tiers.
File to PDF Converter Prepare images, Markdown, HTML, text, and Office-style files for PDF output with local preflight, layout warnings, and review exports.
Filebeat Grok Pattern Generator Turn one representative log line into a Filebeat-ready Grok pattern with ECS field mapping, sample-match checks, and optional ingest pipeline JSON.
Final Grade Calculator Find the final exam score needed for a target course grade, including remaining work, curves, buffers, score ceilings, and runway checks.
Finland AIS Vessel Tracker Find Finnish AIS vessel reports by MMSI, IMO, callsign, name, type, or radius, then audit identity, motion, speed bands, and map position.
Fireplace Screensaver Simulator Tune a browser fireplace screensaver with live flames, embers, smoke, FPS checks, hearth notes, fullscreen preview, and exportable scene reports.
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 Build a firewall rule matrix from flow rows, with risk scoring, audit findings, object-group planning, platform notes, and a scope heatmap.
Firewall Rule Review Report Review firewall rules for stale use, broad sources, expired access, missing owners, and privileged services with a scored cleanup queue.
Firewall Shadow Rule Checker Find shadowed firewall rules in ordered ACL exports, compare full and partial overlaps, and turn risky rule conflicts into a cleanup queue.
Five Number Summary Calculator Calculate a five-number summary from pasted values, compare quartile methods, flag IQR outliers, and review spread with a box plot.
Fixed Deposit Calculator Calculate a fixed deposit maturity value from APR or APY, then compare after-tax yield, real value, payout cash, and coverage-limit flags.
Flagstone Patio Materials Calculator Estimate flagstone patio materials from the planned area, then size stone, base, bedding, joint fill, edging, fabric, waste reserve, and costs.
Flashcard Sheet Generator Create printable flashcard sheets from pasted or imported pairs, with duplex checks, seeded shuffles, cut guides, parse logs, and exports.
Flight Delay Tracker Check a flight number by departure date with sample or provider data, then compare delay minutes, route matches, and timeline evidence.
Flight Emissions Tracker Estimate flight CO2e from airport codes or manual leg distances, compare cabin, SAF, RF, and offset scenarios, and audit each leg.
Flight Tracker Track an aircraft by callsign, ICAO hex, or region, then compare OpenSky freshness, map position, heading, and candidate matches.
Flooring Calculator Estimate flooring boxes from room area and carton coverage, including waste, spare stock, full-box rounding, cost, and buying-risk checks.
Focus Stacking Step Calculator Plan macro focus-stacking rail steps from magnification, aperture, subject depth, overlap, and rail precision with frame counts and warnings.
Forbearance 8 Assessment Reflect on eight forbearance items, compare fault tolerance with viewpoint room, and review a private 8 to 48 profile for ordinary conflict.
Fraction Practice Generator Generate fraction worksheets by mode, ranges, and seed, with worked answer keys, repeat warnings, print layouts, and JSON records.
Free Fall Calculator Calculate free-fall time, impact speed, path length, and optional kinetic energy from height, launch velocity, gravity, and unit choices.
Free Space Path-loss & RSSI Calculator Estimate free-space path loss and predicted RSSI, then compare reserve, Fresnel clearance, SNR, range, and band tradeoffs for RF links.
Freelance Hourly Rate Calculator Calculate a freelance hourly rate from income goals, expenses, tax reserves, unpaid time, utilization, fees, buffers, and quote guidance.
Freelance Tax Set-Aside Calculator Set aside tax from freelance receipts with 2026 bracket math, self-employment tax, safe-harbor targets, state rates, and buffers.
Freight Class Density Calculator Calculate LTL freight density from packed dimensions and gross weight, estimate density class, and flag boundary, packaging, and quote risks.
French Drain Materials Calculator Estimate French drain gravel, pipe, fabric, required fall, outlet checks, and material cost from trench dimensions before ordering.
Friel Heart Rate Zone Calculator Calculate Friel heart rate zones from LTHR or field-test averages, with sport-specific bands, current-HR lookup, session planning, and exports.
Fuel Efficiency Converter Convert MPG (US), L/100 km, and km/L with direction cues, warning checks, rounded equivalents, and a charted consumption curve.
GHS Hazard Pictograms Quiz Practice GHS pictogram recognition with seeded 5- or 9-question rounds, four-choice feedback, missed-answer review, and charted accuracy.
GPA Calculator Calculate a transcript-style GPA from course credits and grades, with repeat rules, pass/fail handling, weighted-course bonuses, and target-gap checks.
GST Calculator Calculate GST from taxable, inclusive, or tax-only amounts with quantity rounding, rate presets, tax-head splits, and receipt-ready exports.
Garden Bed Planner Plan raised beds or patio containers from crop spacing, root depth, seed overage, soil volume, harvest timing, and downloadable row plans.
Garden Calendar Planner Build a dated vegetable garden calendar from crops, frost dates, season length, succession waves, bed notes, and workload checks.
Gas Mileage Calculator Calculate gas mileage from a trip or fill-up, compare MPG with L/100 km, and estimate fuel cost, tank range, and reference gaps.
General Self-Efficacy Assessment Score the 10-item General Self-Efficacy Scale, compare your 10-40 total with reference means, and review supports to reinforce.
Generalized Anxiety Disorder (GAD-7) Assessment Score the seven GAD-7 symptom items, check the 10-point screening cue, and compare anxiety burden with daily function impact.
Generator Watts Calculator Estimate generator running and starting watts from load rows, surge timing, reserve, derating, and safety checks before choosing a size.
Geriatric Depression Scale (GDS-15) Assessment Screen older-adult mood with 15 keyed GDS yes-or-no items, boundary-aware cutoffs, item patterns, and exportable follow-up 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 Analyze Git diff summaries before review, scoring churn, sensitive paths, deletions, generated files, and binary rows into a reviewer queue.
GitHub Actions Cache Config Generator Generate GitHub Actions cache YAML from ecosystem presets, lockfiles, restore keys, runner notes, and review checks before copying.
GitHub Actions Matrix Generator Build a GitHub Actions matrix workflow with runner and runtime axes, cache choices, exception rows, and review checks before committing.
GlusterFS Volume Capacity Calculator Estimate GlusterFS usable capacity from brick sizes, replica or dispersed layout, arbiter sizing, stranded space, and recovery headroom.
Golden Hour Calculator Plan golden hour and blue hour times for a shoot by location, date, sun angle, arrival buffer, sun direction, and horizon cautions.
Good VO2 Max by Age Lookup Look up the Good VO2 max range for an adult age cohort and reference sex, then rate a measured value with source-table gap notes.
Grade Calculator Calculate a current course grade from points, percentages, or letters, then test weights, dropped scores, late penalties, and remaining-work targets.
GraphQL Formatter Format GraphQL queries, fragments, and schema SDL locally, with compact persisted-query text, definition inventory, and warning checks.
Gravel Calculator Estimate gravel volume, tonnage, supplier rounding, material cost, and bag counts for driveways, garden paths, landscape beds, and drainage work.
Grind Size Chooser Choose a coffee grind size from brew method, target time, taste feedback, and grinder range with micron bands and dial-in notes.
Grit-S Assessment Assess Grit-S responses for a chosen long-term goal, comparing overall, consistency, and perseverance means with item cues and reference gaps.
Growing Degree Days Calculator Calculate growing degree days from pasted weather rows, biofix dates, base/cap settings, and stage thresholds with charts and audit warnings.
Growth Chart Report Generator Turn pediatric visit rows into percentiles, height-velocity checks, BMI flags, trend charts, and follow-up cues for growth review.
Growth Percentile Trend Calculator Review a child's height, weight, or BMI percentile path across visits, with WHO/CDC context, band-crossing alerts, charts, and follow-up cues.
Growth Screening Flag Checker Review child growth visit rows in your browser for percentile drift, corrected-age routing, height velocity, adiposity alerts, and family-height triage.
Growth Velocity Calculator Calculate child growth velocity from height or weight visit rows, compare each interval with age-stage bands, and flag spacing, streak, and drift concerns.
Growth Z-Score Calculator Check a child's growth z-score from height, weight, or BMI with WHO/CDC chart selection, percentile context, and preterm age correction.
Guided Reading Groups Planner Plan flexible guided reading groups from roster evidence, text inventory, and teacher-table slots with text matches and rotation checks.
Gutter Cleaning Quote Calculator Build a gutter cleaning quote from measured gutter length, access risk, debris, guards, downspouts, labor cost, margin floor, and job notes.
Gutter Downspout Calculator Plan gutter downspouts from roof drainage area, rainfall intensity, gutter and leader capacity, spacing limits, placement rows, and parts takeoff.
Gzip Compression Checker Check gzip, Brotli, or identity compression for a URL or pasted headers, with cache-variation clues, byte-savings evidence, and request recipes.
Gzip Text Decompressor Decompress gzip, zlib, or raw deflate text in your browser from Base64, Base64URL, hex, escaped bytes, or local files with byte evidence.
HA Failover Budget Calculator Calculate a high-availability failover budget from probe cadence, promotion, traffic convergence, client tail, validation, and RTO buffer checks.
HA Pair Role Consistency Checker Check HA pair role rows for active/standby drift, stale sync, heartbeat failures, VIP mismatches, and priority conflicts before failover.
HAProxy Backend Config Generator Build an HAProxy backend block from server rows with health checks, TLS options, persistence notes, review warnings, and copy-ready output.
HCL Converter Convert Terraform-style HCL into JSON, YAML, env, INI, properties, and path ledgers with browser-local parsing and schema drift checks.
HEXACO Personality Inventory (HEXACO-60) Assessment Score a HEXACO-60 self-report profile with six-domain means, optional college-sample comparisons, facet snapshots, and item evidence.
HIIT Workout Timer Build a HIIT timer with named intervals, warm-up and cooldown timing, density checks, live cues, session logs, charts, and JSON export.
HMAC Generator Generate HMAC signatures in your browser from text or local files, then compare expected headers with SHA choices and byte encodings.
HPI-Style Bright-Side Personality Proxy Assessment Review HPI-style workstyle traits with a 70-item IPIP proxy, raw scale means, derived signals, and shareable answer evidence.
HTML Boilerplate Generator Build an HTML starter document with title, language, metadata, asset paths, and review notes before copying full-page or head markup.
HTML Entity Lookup Look up an HTML entity, symbol, name, or code point, then compare named, numeric, Unicode, and context-safe paste forms for markup or code.
HTML Escape and Unescape Tool Escape HTML snippets for text or attributes, decode nested entities in your browser, and review a transform ledger plus copy-safety warnings.
HTML Minifier Compress pasted HTML locally, see saved bytes, and catch comment, raw-text, inline-spacing, and attribute-shortening risks before copying.
HTML Tag Stripper Turn pasted HTML, emails, or page fragments into browser-local plain text with scope choices, link checks, alt-text handling, and ledgers.
HTML Unescaper Decode escaped HTML text or small files in your browser, inspect each entity change, and flag unresolved references or script-shaped output.
HTML to JSX Converter Turn pasted HTML or SVG into React-ready JSX with local parsing, attribute migration rows, style-object handling, and event warnings.
HTML to Markdown Converter Turn HTML fragments, articles, or page exports into readable Markdown with dialect controls, table fallback warnings, and local review 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 Check pasted HTTP response headers for HSTS, CSP, cookies, cache, CORS, and disclosure risks with scoring, fix order, and JSON evidence.
HVAC Sizing Calculator Estimate room or zone cooling capacity from area, height, climate, insulation, sun exposure, occupants, equipment heat, and size-fit bands.
Handyman Quote Calculator Estimate a handyman quote with labor floors, marked-up materials, fees, risk buffer, tax handling, deposits, and contribution checks.
Hash Type Identifier Check pasted hashes or local text files for likely formats, cleanup warnings, confidence labels, ambiguity clues, and CSV or JSON evidence.
Headcount and FTE Calculator Calculate headcount and FTE from weekly staff rows, contractor rules, and caps, then compare roster capacity by group with checks.
Heart Rate (HR) Zones Calculator Calculate heart-rate zones from age, measured max HR, or heart-rate reserve, then compare formulas, current pulse, and session minutes.
Heart Rate Variability (HRV) Resonance Finder Estimate an HRV resonance breathing pace from resting profile inputs, then review cycle timing, trial windows, warnings, and comfort notes.
Heat Pump Savings Calculator Estimate heat pump savings from fuel use, COP or HSPF2, utility rates, incentives, backup heat, and simple payback timing for bids.
Heatsink Thermal Resistance Calculator Size a heat sink from power, ambient, junction limit, interface loss, and airflow context with C/W targets, margins, and charts.
Height-for-Age Percentile Calculator Check 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, find Helm-style schema failures, coverage gaps, hygiene warnings, and a CI snippet.
High School GPA Calculator Calculate high school GPA from transcript rows, compare weighted and unweighted averages, audit course rules, and see target-gap lift paths.
Home EV Charger Install Cost Calculator Estimate home EV charger installation cost from circuit size, route length, panel work, labor, permits, tax, rebates, and bid scenarios.
Home Office Deduction Calculator Compare simplified and actual home office deduction methods with eligibility checks, income limits, expense allocation, and tax effect estimates.
Hostname Naming Standard Checker Audit hostname inventories for DNS-safe labels, naming regex drift, lowercase rules, required suffixes, duplicates, and JSON-ready cleanup notes.
House Wrap Rolls Calculator Estimate house wrap rolls from wall area, roll size, waste, seams, openings, tape, fasteners, and optional material cost checks.
Hreflang Tag Generator Build hreflang clusters from locale and URL rows, then copy head tags, sitemap XML, or HTTP headers with self-reference audits.
Hypertext Transfer Protocol (HTTP) Header Checker Check a live URL's HTTP headers, redirect hops, cache semantics, cookies, CORS exposure, and hardening priorities from one report.
Hypertext Transfer Protocol (HTTP) Redirect Checker Trace an HTTP redirect chain hop by hop, catch loops, TLS issues, status changes, host handoffs, latency spikes, and replayable cURL.
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 Check IAM policy JSON for wildcard actions, resources, principals, negated allows, and PassRole exposure with ranked remediation evidence.
INI Converter Convert INI or CFG text into JSON, YAML, env text, Java properties, and normalized INI with duplicate-key, skipped-line, and type checks.
IOPS / MBps / GB-per-day Converter Convert IOPS, throughput, and daily data volume from block size and active hours, then compare reserve-adjusted ceilings and cloud disk fit.
IP Address to Decimal Converter Convert IPv4 addresses between dotted, decimal, hex, binary, octal, and mapped IPv6 forms with range labels and byte-order checks.
IP Overlap Checker Check IPv4 ranges for CIDR overlaps, host-bit corrections, duplicate address counts, and coverage blocks before routing or peering changes.
IP3 and SFDR Calculator Estimate IP3, IM3 clearance, and SFDR for RF two-tone tests using gain, noise bandwidth, detection margin, and clean-tone limits.
IPIP Personality Inventory (IPIP-NEO-120) Assessment Complete a 120-item IPIP-NEO-120 Big Five assessment with browser-scored raw domain totals, 30 facet scores, charts, and keyed answer evidence.
IPIP Personality Inventory (IPIP-NEO-60) Assessment Complete a 60-item IPIP-NEO-60 Big Five profile with browser-scored domain means, two-item facet clues, profile charts, and answer review exports.
IPsec Overhead Calculator Size an IPsec tunnel by calculating inner MTU, TCP MSS clamp, ESP overhead, NAT-T bytes, and profile-specific padding before rollout.
IPv4 Allocation Planner Plan IPv4 subnet allocations from a parent CIDR, size each host request, and catch alignment gaps, fit issues, and headroom before rollout.
IPv4 Renumbering Planner Plan IPv4 renumbering waves from host mappings, prefix boundaries, DNS TTL, and DHCP lease timing with readiness checks and rollback runbooks.
IPv4 Subnet Allocation Planner Plan IPv4 child subnets from a parent CIDR, size VLSM blocks from host demand, and check headroom, gaps, gateways, and overflow.
IPv4 Supernet Calculator Summarize IPv4 CIDR lists into a single cover route or exact aggregate set, with gap exposure warnings, normalization, and exportable ledgers.
IPv6 Address Compressor / Expander Normalize one IPv6 address into compressed and expanded forms, with prefix, zone, dotted IPv4 tail, hextet, binary, and reverse-DNS checks.
IPv6 Address and Subnet Calculator Calculate an IPv6 subnet from any address or CIDR, then review the canonical range, child-prefix capacity, reverse-DNS alignment, and EUI-64 samples.
IPv6 Prefix Plan Calculator Plan IPv6 site and LAN prefixes from a parent CIDR, then check capacity, /64 fit, nibble alignment, and copyable ledger rows.
Iced Coffee Flash Brew Calculator Plan a flash-brew iced coffee recipe by balancing coffee dose, hot water, brew ice, retained liquid, pour timing, and chill guardrails.
Ideal Weight Calculator Estimate adult ideal weight from Devine, Hamwi, Robinson, and Miller formulas, then compare the result with a BMI-based healthy-weight corridor.
Image Background Remover Remove simple image backgrounds locally, tune color or edge masking, check warnings and coverage, and download a transparent PNG for photos or logos.
Image Compressor Compress an image in your browser, resize or reformat it, compare size and quality changes, and strip supported EXIF before download.
Image Cropper Crop an image in your browser, lock ratios or exact pixels, check upscaling and file-size risks, then export PNG, JPEG, or WebP.
Image Format Converter Convert a single image locally into PNG, JPEG, WebP, AVIF, BMP, or ICO with resize controls, transparency handling, and byte-size warnings.
Image Metadata Stripper Strip image metadata in your browser, re-export a clean JPEG, PNG, or WebP, and compare privacy markers, GPS hints, size, and warnings.
Image Resizer Resize one image in your browser, compare fit, contain, cover, no-upscale, quality, and size-cap outcomes before downloading the file.
Image to Base64 Encoder Encode one image to Base64 or a Data URI, preview the result, and check optimization, SVG alternatives, and inline-delivery size tradeoffs.
Impedance Calculator Calculate series RLC impedance from reactance or component values, then check magnitude, phase, power factor, RMS current, and phasor direction.
Incident Action Items Tracker Turn incident action rows into a review ledger with owners, due-date states, blocker checks, missing-field warnings, and workload charts.
Incident MTTx Metrics Calculator Calculate incident MTTD, MTTA, MTTC, and MTTR from lifecycle CSV rows, with target breaches, P85 tails, warnings, and stage charts.
Incident Timeline Report Turn incident notes into a sorted timeline with phase coverage, long-gap checks, evidence warnings, and a Markdown-ready review report.
Income Tax Calculator Estimate income tax from monthly or annual income, compare bracket slices and scenario changes, and note filing limits before planning payments.
Insomnia Severity Index Assessment Score recent insomnia burden with the seven-item ISI, compare published severity bands, and review night, day, and distress drivers.
Insulation Calculator Plan an insulation order from measured area and R-value, with package rounding, target checks, depth estimates, costs, and heat-loss comparison.
Interface Description Standard Checker Audit network interface descriptions from config, CSV, or show output for missing evidence, duplicates, length issues, and cleanup work.
Intermittent Fasting Planner Plan an intermittent fasting schedule from your first meal time, then check safety ceilings, weekend shifts, hydration cues, and rhythm charts.
Internet Protocol (IP) Geolocation Finder Check a public IP, domain, or URL for approximate location, ASN, timezone, reverse DNS, map context, and follow-up network checks.
Internet Protocol version 4 (IPv4) Subnet Calculator Calculate an IPv4 CIDR block from an address or mask, then check usable hosts, wildcard masks, split fit, and special-use warnings.
Internet Protocol version 4 (IPv4) Subnet Split Calculator Split an IPv4 parent block into equal child CIDR ranges, compare usable hosts and gateway slots, and catch large-ledger or special-use warnings.
Interpersonal Reactivity Index Assessment Score the 28-item IRI as four empathy facets, compare concern versus distress, and review reverse-keyed item evidence before sharing.
Interview Questions Generator Build an interview guide from a role or research brief with tailored questions, follow-up probes, scoring anchors, risk checks, and exports.
Inventory Carrying Cost Calculator Estimate inventory carrying cost from stock value and component rates, with margin drag, turnover, benchmark gaps, and reduction-savings views.
Inventory Reorder Point Calculator Calculate a SKU reorder point from demand, lead time, service-level safety stock, inventory position, supplier rounding, and stress checks.
Invoice Due Date Calculator Calculate invoice due dates from Net, EOM, business-day, weekend, and holiday rules, with walkthroughs and overdue status checks.
Invoice Late Fee Calculator Calculate invoice late fees from due dates, grace periods, rates, caps, credits, and rounding, with clause math and AR note output.
Irrigation Runtime Calculator Calculate controller runtimes from ETo, crop coefficient, rainfall, sprinkler or drip flow, efficiency losses, soil reserve, and cycle-soak limits.
JSON Converter Turn JSON or JSON Lines into clean tables and handoff files with record-path selection, flattening controls, and precision warnings.
JSON Diff Comparator Compare JSON payloads as parsed structures, find path-level changes, tune array matching, ignore noisy fields, and export review evidence.
JSON Formatter Turn messy JSON into readable, compact, sorted, or line-delimited output with duplicate-key, size, and number-precision warnings in your browser.
JSON Repair Tool Repair broken JSON-like text into strict JSON locally, then review the ledger, structure audit, and precision warnings before copying.
JSON Schema Breaking Changes Checker Compare released and proposed JSON Schemas, flag required-field, type, enum, constraint, closure, and local-reference risks before release.
JSON Sorter Sort JSON into repeatable key order in your browser, clean JSONC drafts, flag duplicate names, and review paths before copying output.
JSON Validator Validate JSON, JSONC, JSON5, or JSON Lines in your browser, then catch syntax errors, duplicate keys, unsafe numbers, and root-shape issues.
JSON to CSV Converter Turn nested JSON or JSON Lines into spreadsheet-ready CSV or TSV, with record-path selection, flattened headers, previews, and formula warnings.
JSON to TypeScript Converter Generate TypeScript declarations from JSON or JSON Lines samples, with optional-field evidence, null policies, guard code, and review notes.
JSON-LD Generator Draft JSON-LD for Article, Product, Organization, and FAQ pages with page-match audit rows, property ledgers, and copy-ready script output.
JSONPath Tester Test JSONPath selectors on pasted or loaded JSON, compare matched values with paths and JSON Pointers, and catch filter or syntax issues locally.
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 JSON into SPKI public or PKCS#8 private PEM, with local validation, thumbprints, and clear key-family checks.
JWT Claims Risk Checker Check JWT claims and headers for issuer, audience, time, algorithm, replay, and sensitive-data risks before relying on a token in an API.
JWT Decoder Inspect a compact or Bearer JWT locally, read claims, and review timing, issuer, audience, signature, TTL, and sensitive-claim warnings.
JavaScript Minifier Minify JavaScript locally, compare raw and gzip savings, and catch syntax, module-scope, comment, console, and source-map risks.
Job Satisfaction Survey Assess job satisfaction with the 36-item JSS, then review total and facet bands, reverse scoring, support gaps, charts, and export-ready summaries.
Jumbo Frame Savings Calculator Estimate jumbo-frame packet-rate relief from traffic rate, MTU sizes, eligible share, frame overhead, path scope, and optional CPU cost.
Jungian Type Profile Assessment Answer a 20-item Jungian preference check, then review a four-letter proxy code, pair margins, nearby-code cautions, and a function stack preview.
Junk Removal Quote Calculator Estimate a junk removal quote from truck fill, debris mix, access labor, disposal fees, travel premiums, tax, and margin checks.
Kafka Partition Count Calculator Plan Kafka topic partitions from throughput, event rate, consumer parallelism, replication footprint, broker balance, and keying warnings.
Keepalived VRRP Config Generator Generate a Keepalived VRRP config with VIP rows, unicast or multicast peer settings, health tracking, directive audits, and failover timing.
Kessler Psychological Distress Scale (K10) Assessment Score recent K10 psychological distress with common and Australian bands, high-item flags, factor load charts, exports, and support cues.
Kessler Psychological Distress Scale (K6) Screener Screen recent psychological distress with six K6 questions, 5+ and 13+ cutoffs, item drivers, charts, and in-browser scoring.
Key-Value Config Converter Convert INI, .properties, or .env text into JSON, YAML, properties, INI, or dotenv output with a key ledger and duplicate checks.
Knockout Advancement Calculator Work out a two-leg knockout tie from both scores, host order, away-goals rules, extra time, penalties, and live scoreline maps.
Kubernetes Cluster Capacity Calculator Plan a Kubernetes replica ceiling from node allocatable resources, pod requests, surge, PDB, failure drills, zone loss, and pod IP limits.
Kubernetes Deployment Generator Generate Kubernetes Deployment YAML with Service routing, probes, resources, security settings, rollout policy, and HPA or PDB review warnings.
Kubernetes Deprecated APIs Checker Check Kubernetes manifests for API versions removed by a target release, with blocker counts, migration queues, and replacement cues.
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 labels and allow rows, with peer syntax checks, rollout commands, review warnings, and a flow map.
Kubernetes Pod Security Context Checker Check Kubernetes workload YAML for risky securityContext settings, inherited pod defaults, Pod Security gaps, and remediation patch cues.
Kubernetes Resource Requests Checker Check Kubernetes manifests for missing CPU, memory, and ephemeral-storage requests, limit mismatches, QoS clues, and scheduler footprint gaps.
Kubernetes Upgrade Skew Calculator Check Kubernetes version skew before a minor upgrade, including API server HA windows, node lag, kubectl fit, staged hops, and blockers.
LACP Bundle Capacity Calculator Calculate LACP bundle capacity after failed links, reserve, and hash efficiency, with headroom, failure tolerance, and single-flow risk.
LED Savings Calculator Estimate LED lighting savings from old and replacement watts, runtime, rates, rebates, and install costs, with payback and fixture checks.
LaTeX Editor Write LaTeX equations, catch brace or macro issues, preview rendered math, and export reusable MathML, AsciiMath, images, or source files.
LaTeX Table From CSV Generator Turn CSV, TSV, semicolon, or pipe-delimited data into LaTeX tables with parsing warnings, package notes, and column audit output.
Ladder Reach Calculator Plan ladder size for roof access, wall work, or stepladder jobs with reach margins, base setback, duty-load checks, and setup cautions.
Landed Cost Per Unit Calculator Calculate landed cost per unit from goods value, freight, duty, tax, MPF/HMF, fees, and selling price with margin and pressure checks.
Landscape Rock Coverage Calculator Estimate landscape rock coverage from bed area, depth, density, reserve, supplier units, truck capacity, fabric overlap, and material cost.
Large Language Model (LLM) Usage Cost Calculator Estimate LLM API spend from token mix, request volume, caching, retries, fixed fees, and budget caps with model price comparisons.
Laser Cut Settings Estimator Estimate starter laser cut settings for CO2 or diode machines, then compare scrap-test rows for power, speed, passes, focus, and kerf.
Late Work Penalty Calculator Check an adjusted late-work grade from course timestamps, grace time, day or hour rules, deduction caps, cutoffs, score floors, and rounding.
Lawn Fertilizer Bags Calculator Plan fertilizer bags for a lawn from label coverage or nitrogen target, with N-P-K rate checks, reserve, bundle rounding, cost, and spread notes.
Lawn Mowing Quote Calculator Build a lawn mowing quote from turf area, service cadence, edging, route time, operating costs, minimum charge, and margin floor.
Lawn Seed Calculator Plan a grass seed order from lawn area, seed rate or bag coverage, pure-live-seed adjustment, whole-bag rounding, and estimated cost.
Lean Body Mass Calculator Calculate lean body mass from height, weight, sex, and optional body-fat checks, with formula spread, FFMI, and warning cues for trend checks.
Learning Quiz Pack Generator Build repeatable quiz packs for flags, map outlines, signal alphabets, and Braille with seeded questions, answer keys, and coverage checks.
Lens Equivalence Comparator Match lenses across camera formats with target focal length, depth-of-field look, video crop adjustments, and practical lens candidates.
Letter Tracing Sheet Generator Create printable letter tracing sheets with A-Z ranges, guide lines, formation cues, learner levels, seeded versions, and teacher-ready exports.
Liebowitz Social Anxiety Scale (LSAS-SR) Assessment Assess past-week social anxiety with LSAS-SR fear and avoidance totals, 30/60 screening anchors, profile splits, charts, and browser exports.
Life Orientation Test-Revised (LOT-R) Assessment Score the 10-item LOT-R, including direct optimism, reverse-scored pessimism, filler responses, and a continuous 0 to 24 outlook result.
Load Balancer Failover Time Calculator Estimate load balancer failover time from probe intervals, thresholds, reroute delay, DNS TTL, drain windows, and RTO scenario pressure.
Load Balancer Pool Capacity Calculator Estimate load balancer pool capacity from backend RPS, weights, health, utilization targets, growth, and N+ reserve with bottleneck cues.
Locus of Control Orientation Proxy Assessment Explore locus-of-control patterns with 12 paired statements, comparing self-direction against chance and powerful-others scores, tilt, and spread.
Log Sampling Rate Calculator Calculate the log sampling rate needed to fit a daily storage target, with event-size math, protected reserves, burst planning, and keep-policy cues.
Logic Grid Puzzle Generator Generate replayable logic grid puzzles from custom categories, then verify uniqueness with solver counts, answer keys, sheets, and maps.
Long Division Calculator Calculate long division with quotient, remainder, decimal continuation, repeat detection, step table, and a recomposition check for whole numbers.
Lorem Ipsum Generator Generate repeatable lorem ipsum for mockups, tune paragraph or word targets, and review metrics before copying formatted output.
Lumber Calculator Plan lumber boards to buy from finished pieces, stock length, kerf, waste, bundle rounding, and pricing in metric or board-foot units.
MAC Address Details Lookup Look up a MAC address, normalize EUI-48 or EUI-64 input, and compare vendor evidence with bit flags, privacy clues, and special-use checks.
MAC Address Generator Generate MAC address batches for VM labs, fixtures, and docs with prefix control, local/unicast flags, seeded replay, and duplicate checks.
MAS-12 Medication Adherence Proxy Assessment Check medication-routine friction across dose-taking, clinician communication, medication knowledge, and daily-life fit with follow-up prompts.
MBTI-Style Type Preference Proxy Assessment Reflect on MBTI-style type preferences with 28 guided prompts, pair margins, close-call flags, flip pressure, and answer exports.
MTA-STS Validator Check an email domain's MTA-STS TXT record, HTTPS policy, MX coverage, cache window, and policy-host certificate before enforce mode.
MTU MSS Calculator Calculate TCP MSS from path MTU and tunnel overhead, then check effective MTU, DF ping payload, IPv4 or IPv6 floors, and clamp guidance.
MX Record Lookup Look up a domain's MX records, compare public resolver answers, and flag Null MX conflicts, unresolved hosts, CNAME targets, and mail-policy clues.
Macrame Cord Length Calculator Plan macrame cord cuts from project size, mount style, knot density, fringe, reserve, and spool length with cut plans and package estimates.
Macro Target Calculator Calculate daily calorie and macro targets from body metrics, activity, goal pace, BMR formula, protein floor, and meal split warnings.
Maintenance Window Conflict Checker Check maintenance schedules for overlapping windows, blackout hits, owner or dependency collisions, and concurrency spikes in review-ready ledgers.
Malaysia PCB Calculator Calculate 2026 Malaysia PCB/MTD from salary, bonus, TP1/TP3, zakat, EPF, and CP38 with payroll audit tables and formula checks.
Malaysia Tax Deductions and Reliefs Calculator Calculate Malaysia YA 2024 or 2025 resident reliefs, cap donations and claims, and turn aggregate income into chargeable income.
Map Outlines Quiz Practice map outline recognition across US states, US territories, and world countries with seeded rounds, answer review, and accuracy charts.
Marathon Pace Predictor Estimate a marathon finish time from weekly distance, training speed, and run frequency, with even-effort splits and caution checks.
Marathon Training Schedule Planner Build a marathon training schedule from your race date and current base, then review long-run progression, cutbacks, taper weeks, and calendar exports.
Maritime Signal Flags Quiz Practice maritime signal flags by matching ICS letters or numeral pennants, then review seeded rounds with ledgers, charts, and exports.
Markdown Previewer Preview Markdown locally with GFM or CommonMark rules, raw-HTML safety controls, heading anchors, source audits, and exportable HTML.
Markdown Table Generator Turn CSV, TSV, semicolon, or pipe rows into GitHub-style Markdown tables with header detection, pipe escaping, and column audits.
Markdown to HTML Converter Convert Markdown to HTML in your browser, review safe preview output, and catch raw HTML, external-link, parser, and size warnings before reuse.
Marking Time Calculator Estimate marking time from submissions, per-item minutes, deadline, daily hours, buffers, batch breaks, warnings, and a daily pace plan.
Markup Calculator Calculate markup, margin, and target list prices from costs, fees, discounts, and rounding rules with break-even and scenario checks.
Maslach Burnout Inventory (MBI) Assessment Assess burnout strain across EE, DP, and PA dimensions, then review band guides, high-burden items, and follow-up cues for work check-ins.
MathML Editor Review MathML markup, check XML syntax, namespace, structure depth, and preview differences, then copy formatted markup or export reports.
Matrix Screensaver Simulator Design a Matrix-style code rain screensaver, tune glyph density, glow, trails, and FPS, then compare metrics and operator cues.
Maximal Oxygen Uptake (VO2 Max) Calculator Calculate VO2 max from heart-rate, Cooper, 1.5-mile, or Rockport test data with METs, absolute oxygen use, warnings, and age-sex benchmarks.
Meditation Timer Plan a meditation sit with prep countdowns, start and end bells, sparse interval cues, live progress, and browser-local schedule exports.
Meeting Agenda Generator Build a timeboxed meeting agenda from outcomes, topic rows, owners, and decision rules, with overrun checks and a facilitation brief.
Meeting Cost Calculator Estimate meeting cost from attendees, loaded rates, duration, prep, follow-up, recurrence, and right-size scenarios with audit cues.
Meeting Minutes Generator Turn rough meeting notes into structured minutes with attendance, decisions, actions, review checks, and copyable Markdown for circulation.
Meta Tag Generator Build search and social meta tags from page facts, with canonical URL checks, robots warnings, preview image validation, and copy-ready markup.
Microstrip Impedance Calculator Estimate PCB microstrip impedance or solve target trace width from stackup geometry, compare IPC and Hammerstad models, and flag tolerance risks.
Mid-Parental Target Height Calculator Estimate a child's mid-parental target height from biological parent heights, compare formula methods, and read the expected family band.
Mindful Attention Awareness Scale (MAAS-15) Assessment Assess everyday mindful attention with a MAAS-15 mean, review-item cues, reflective lane summaries, charts, and browser-based exports.
Mini-IPIP Big Five Assessment Take a browser-scored Mini-IPIP Big Five assessment with reverse-keyed trait means, profile spread, trait ring, and answer review.
Missing Number Sheet Generator Generate missing-number worksheets for counting and skip-counting practice, with seeded versions, answer keys, setup notes, and print-ready rows.
Mobile Detailing Quote Calculator Build a mobile detailing quote that separates service scope, vehicle condition, travel, add-ons, margin checks, tax, and customer notes.
Mole Gram Particle Converter Turn a known mass, mole amount, or particle count into matching chemistry values with molar-mass math, formula steps, and lab checks.
Monthly Budget Calculator Plan a monthly budget from take-home income, check needs, wants, goals, cushion, and emergency runway, and export a readable review.
Monthly Retainer Capacity Calculator Test a monthly retainer before quoting, with safe client slots, response reserve, rollover exposure, margin stress, and capacity exports.
Mood and Stress Screener Comparator Compare mood, anxiety, stress, distress, and older-adult screeners by concern, time, risk wording, fit score, and handoff caveat.
Morse Code Decoder Decode written Morse into readable text in your browser, catch separator or unknown-token problems, and create timing charts or practice audio.
Morse Code Generator Encode text or TXT files into Morse code with unknown-character checks, WPM and Farnsworth timing, playback, timeline charts, and WAV audio.
Morse Code Quiz Practice Morse code recognition with letter, number, or mixed quizzes, then review missed patterns through seeded rounds, charts, and exports.
Mortgage Calculator Estimate your mortgage payment, cash to close, PMI, escrow, amortization, and extra-principal payoff savings from one purchase scenario.
Motorcycle Tire Pressure Calculator Plan cold motorcycle tire pressures for solo, passenger, and luggage rides with front/rear targets, safe windows, and temperature drift.
Moving Labor Hours Calculator Estimate moving labor hours from home size, crew size, stairs, carry distance, heavy items, drive time, and booking rules before you reserve movers.
Mulch Coverage Calculator Calculate how much mulch to buy from bed area, top-up depth, bag size, exclusions, bulk rules, costs, and crew lifting limits.
Multiple Choice Sheet Generator Build multiple-choice worksheets from pasted rows, CSV, or Aiken blocks with seeded versions, answer keys, quality checks, and print-ready 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 the right NAICS code from an activity phrase or code, then compare ranked 2022 matches, retired 2017 rows, hierarchy paths, and change flags.
NAT Pool Capacity Calculator Size a NAT or SNAT pool from public IPs, sessions, reserve, growth, and hot-destination pressure with capacity warnings and charts.
ND Filter Exposure Calculator Calculate ND filter stops from metered and target exposure settings, then compare fixed, stacked, and variable filter choices for stills or video.
NEO PI-R Proxy Assessment Complete a 120-item IPIP NEO-style proxy assessment with raw domain and facet means, reverse-key review, and no official norm claims.
NGINX Proxy Headers Checker Check an NGINX proxy block for forwarded-header gaps, spoofed-client risks, WebSocket handling, timeout mismatches, and fix order.
NTP Offset Log Checker Check NTP or chrony peer rows for offset, jitter/error, reach, stratum, and selected-source risks with a ledger and offset map.
Name Tracing Sheet Generator Create printable name tracing sheets from a roster, tune guide lines and practice patterns, and catch long-name or page-density issues before printing.
Nameserver Health Check Check a domain's nameserver health with resolver comparison, glue readiness, public-address checks, SOA timers, and repair cues.
Nanny Payroll Taxes Calculator Estimate 2026 nanny payroll taxes from cash wages, worker category, FICA, FUTA, state unemployment, paycheck withholding, and employer reserve.
Nanny Share Cost Calculator Estimate each family's nanny-share cost from shared care, solo hours, overtime, host credits, 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 and ncat commands for authorized connect, listen, scan, TLS, proxy, and transfer tasks with shell quoting and warnings.
Netplan Config Generator Build Netplan YAML for Ubuntu static interfaces with CIDR addresses, DNS, routes, MAC matching, MTU checks, and review warnings.
Network Audit Findings Report Turn network audit findings into a sorted remediation register with escalation status, owner queues, evidence gaps, charts, and report wording.
Network Change Plan Report Plan a network change with readiness gates, rollback evidence, run order, residual risk, and a cutover profile reviewers can scan.
Network Throughput Calculator Estimate network throughput and transfer time from link speed, RTT, packet loss, TCP windows, streams, and packet-rate limits with bottleneck checks.
Nginx Server Block Generator Generate an NGINX server block for static, PHP-FPM, or proxy sites with TLS redirects, upstream checks, HSTS cues, and deploy notes.
Noise Figure Cascade Calculator Calculate RF receiver cascade noise figure, sensitivity, and target margin from staged gain, passive loss, bandwidth, and SNR assumptions.
Number Tracing Sheet Generator Create printable number tracing worksheets with 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 RIASEC Holland code, compare theme scores, and check task evidence for career exploration.
OAuth Redirect URI Policy Checker Check OAuth redirect URI registrations against observed requests, with exact-match drift, wildcard, fragment, HTTP, and open-redirect warnings.
OCR PDF Tool Extract text from scanned or text-native PDFs in your browser, with OCR fallback, confidence ledgers, page guards, and text downloads.
OSPF Interface Cost Calculator Calculate OSPF interface cost from reference and interface bandwidth, compare manual overrides, and spot fast-link cost collapse before routing changes.
Object Storage Cost Calculator Estimate monthly object storage cost from average capacity, object size, requests, retrieval, egress, lifecycle exposure, and editable rate cards.
Observability Event Volume Calculator Calculate retained observability storage from event rate, event size, retention, compression, replicas, overhead, reserve, and quota headroom.
Observability Ingest Cost Calculator Estimate monthly observability ingest cost from logs, traces, metrics, collector reduction, indexing, retention, discounts, and growth forecasts.
Office Cleaning Bid Calculator Build an office cleaning bid from square footage, visit frequency, labor cost, add-ons, overhead, minimum visit floors, and margin checks.
On-call Handover Report Prepare an on-call handover from incident rows, owners, and escalation notes with hot-item, missing-action, and async-risk warnings.
One Rep Max (1RM) Calculator Estimate one-rep max from a completed set, compare seven formulas, and turn the result into rounded training loads and confidence cues.
Online Bomberman Game Play a Bomberman-style maze run with difficulty modes, assist lanes, local best scores, event logs, score timelines, and JSON exports.
Online Breakout Game Play a Breakout-style brick run with preset or custom difficulty, streak scoring, saved browser bests, and downloadable run records.
Online Clock Check live local, UTC, and world-zone time, compare handoff work windows, and copy Unix timestamps, calendar invite text, or JSON.
Online Digger Game Play a Digger-style tunnel run, tune difficulty and mode, then inspect score sources, shot accuracy, bag drops, and route pace.
Online File Compressor Compress one local file in your browser, pick ZIP, TAR, gzip, or Brotli output, and review size savings, split parts, and SHA-256 integrity.
Online Pacman Game Play a Pac-Man-style maze run with difficulty and mode choices, then compare clear rate, power chains, fruit bonuses, and saved run history.
Online Snake Game Play Snake with wrap or solid walls, pace choices, combo scoring, bonus pickups, and run summaries that show score, timeline, and crash cause.
Online Space Invaders Game Play a Space Invaders-style browser game with keyboard, mouse, or touch controls, then review score, accuracy, threat, and local bests.
Online Tetris Game Play a Tetris-style browser game with speed presets, ghost and hold assists, next-piece previews, and run summaries for score and lines.
Online Tic Tac Toe Game Play Tic Tac Toe against a computer or local opponent with minimax hints, threat markers, board review tabs, and saved practice stats.
Op-Amp Gain Calculator Calculate op-amp gain for feedback circuits, solve Rf or input resistors, and check rail swing, bandwidth, slew rate, tolerance, and load current.
Open Graph Tag Generator Generate Open Graph and X card tags from page titles, URLs, images, article fields, and crawler warnings before copying head markup.
Open Graph Tag Previewer Preview social share cards from pasted HTML or a public URL, with Open Graph, X card, image, canonical, crawler, and platform score checks.
OpenAPI Operation Coverage Checker Compare OpenAPI operations against test evidence, find unmatched routes or IDs, and turn release-gate gaps into an owner-ready queue.
OpenVPN Client Config Generator Generate an OpenVPN client profile from endpoint, route, TLS, cipher, and certificate choices, then review import blockers and security warnings.
Overtime Pay Calculator Calculate gross overtime pay from hourly rate, daily or weekly hour rules, premium tiers, rounding, and flat add-ons with audit tables.
Ovulation Calculator Estimate ovulation and fertile windows from your last period, cycle length, luteal phase, and recent-cycle range with calendar cautions.
PANAS-SF Affect Snapshot Assessment Rate 10 past-week PANAS-SF feeling words, compare Positive and Negative Affect totals, and spot the strongest item signals before sharing.
PDF Compressor Compress a PDF in your browser with a local rewrite, production-size estimates, and warnings for image-heavy, encrypted, or oversized files.
PDF Merger Merge local PDFs in the order you choose, verify accepted files, page totals, size limits, and metadata, then download one combined document.
PDF Page Deleter Delete PDF pages in your browser, verify source-to-output renumbering, catch range or fidelity warnings, and download a cleaned copy.
PDF Page Extractor Extract selected pages from a PDF in your browser, preserve typed order or remove repeats, and verify the new file with a manifest.
PDF Page Manager Reorder, rotate, extract, and split PDF pages in your browser with typed ranges, source ledgers, page-flow checks, and local downloads.
PDF Page Marking Planner Add visible page numbers or watermarks to selected PDF pages, check range and placement warnings, and download a browser-created copy.
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 PDF pages in your browser with ranges, reverse or odd-even presets, duplicate handling, and a manifest for checking every output page.
PDF Password Workflow Planner Plan local PDF open and owner passwords, estimate entropy, map permission flags, and export redacted handoff notes for later encryption.
PDF Protector Protect a PDF in your browser with open and owner passwords, AES encryption choices, permission profiles, local scans, and verification checks.
PDF Redactor Plan PDF redactions locally, scan selectable text for targets, flag hidden-data risks, and export handoff evidence before true removal.
PDF Repair Tool Repair a damaged PDF locally, review parser and structure warnings, and download a normalized copy when pages can be rebuilt.
PDF Rotator Rotate selected PDF pages in your browser, review page selectors and final orientations, and download a corrected copy without uploading the file.
PDF Signer Stamp a local PDF with a typed, drawn, or image signature mark, check placement and readiness, and download a visual-only signed copy.
PDF Splitter Split one PDF in your browser into page ranges, one-page files, or fixed packets with overlap checks, a manifest, and ZIP output.
PDF Unlocker Unlock an approved PDF locally with a known open or owner password, check authorization and file evidence, then download a verified copy.
PDF Watermarker Add text watermarks to a PDF in your browser, choose exact pages, adjust opacity, rotation, position, or tiling, and download the marked copy.
PDF to File Converter Convert a PDF in your browser into text, rows, page images, slides, or document files with page-range checks and no server upload.
PEM Bundle Extractor Split PEM bundles into certificates, CSRs, keys, and other BEGIN/END blocks with line spans, byte counts, and SHA-256 checks before export.
PTO Accrual Calculator Project a PTO balance from accrual rates, used time, planned leave, caps, and carryover rules with a ledger that exposes shortfalls.
PXE Boot Menu Generator Generate PXELINUX, iPXE, and GRUB boot menus from boot rows, with default-entry checks, fallbacks, validation notes, and JSON output.
Pace & Speed Converter Convert running pace to speed or speed to pace, then estimate finish times, split checkpoints, and Riegel race projections in km or miles.
Pace Band Generator Build a race pace band from distance, target time, marker spacing, and pacing shape, with cumulative splits, strategy checks, and drift charts.
Package Shipping Cost Calculator Estimate parcel shipping cost from packed weight, dimensions, zone, surcharges, discounts, packaging, and margin with billable-weight checks.
Packet Capture Size Calculator Estimate packet capture storage from link rate, duration, filters, snap length, pcap overhead, compression, and reserve before a capture run.
Paint Calculator Estimate room paint from wall area, openings, coats, product coverage, waste, and container rounding before buying litres or gallons.
Painting Quote Calculator Price a painting job from measured area, coats, prep, paint, labor, overhead, margin, tax, and quote checks before sending the bid.
Pallet Load Plan Calculator Plan a palletized load from carton and pallet dimensions, compare TI-HI height and weight limits, and flag partial pallets or overhang.
Parent Daily Report Generator Turn daily care notes into a parent-ready report with meals, rest, care, learning highlights, pickup wording, and review warnings.
Passport Photo Size Lookup Look up passport, visa, and ID photo sizes, head bands, pixel targets, and print-sheet fit before preparing a crop or photo lab file.
Password Strength Calculator Check password strength in your browser, compare login and breach crack-time estimates, flag predictable patterns, and plan safer upgrades.
Patch Window Duration Calculator Estimate a patch window from device count, batch size, install and reboot time, with slack, phase timing, canary, and rollback cues.
Patient Health Questionnaire (PHQ-15) Assessment Score recent PHQ-15 somatic symptoms, see the 0 to 30 burden band, and review top symptom drivers plus body-system patterns for follow-up.
Patient Health Questionnaire (PHQ-9) Assessment Score a PHQ-9 depression screener, map the 0 to 27 severity band, and flag Item 9, function impact, and symptom drivers for follow-up.
Pattern Practice Sheet Generator Create printable pattern worksheets with AB to ABBA cycles, missing-cell tasks, answer keys, reproducible seeds, and load-map checks.
Paver Calculator Calculate paver quantities from footprint, paver size, joints, waste, packs, and price so you can order with clear surplus and cost checks.
Paycheck Calculator Estimate U.S. take-home pay from hourly, salary, or per-check gross wages with 2026 federal and FICA tax math, deductions, and warnings.
Payment Processor Fee Calculator Calculate payment processor fees, net received, effective rates, gross-up charges, and provider comparisons with editable rate rules.
Payroll Proration Calculator Calculate prorated gross pay for partial pay periods, compare calendar or workday methods, and review day counts, rounding, and warnings.
Perceived Stress Scale (PSS-10) Assessment Score a PSS-10 last-month stress check-in, see direct and reverse-scored item contributions, and compare a prior total without cutoff labels.
Percentage Calculator Solve percent-of, part-of-whole, percent change, value-after-change, and reverse percentage questions with formulas and sense checks.
Percentile Calculator Find percentiles from pasted numbers or CSV/TXT files, compare inclusive, nearest-rank, and exclusive methods, and inspect sorted ranks.
Personal Carbon Budget Analyzer Estimate an annual carbon budget from home energy, travel, diet, other sources, and offsets with runway and reduction-lever views.
Personal Loan Calculator Estimate a personal loan payment, fee impact, payoff date, total interest, and prepayment savings with amortization schedules and warnings.
Personality Assessment Hub Compare personality assessment routes by goal, time, result shape, caveat tolerance, and evidence emphasis before choosing what to open.
Pet Travel Crate Size Calculator Calculate pet travel crate dimensions from A/B/C/D measurements, bedding, snub-nosed allowance, shared-crate rules, and fit checks.
Phonics Worksheet Generator Build phonics worksheets from word lists and target sounds, then check answer keys, teacher notes, coverage balance, and printable prompts.
Photo Print Resolution Calculator Check photo print resolution from pixel dimensions, print size, crop reserve, target PPI, and framing mode before ordering or upscaling.
Picture Word Matching Sheet Generator Create picture-word matching sheets from cue and word rows, with shuffled word banks, answer keys, teacher checks, and printable exports.
Ping Results Analyzer Analyze saved ping output for packet loss, RTT spikes, jitter, sequence gaps, and timing charts before writing a network handoff.
Pittsburgh Sleep Quality Index Assessment Assess past-month sleep quality with PSQI scoring, seven component drivers, the >5 review cue, sleep-efficiency math, and observer notes.
Pizza Dough Ball Calculator Scale pizza dough balls from target weight and baker's percentages, then get ingredient grams, yeast adjustments, proof timing, and handling warnings.
PoE Budget Calculator Plan a PoE switch budget from device rows, port count, reserve policy, cable loss, IEEE ceilings, surge checks, and priority shedding.
Polymeric Sand Calculator Estimate polymeric sand bags from paver area, joint width, depth, layout, waste, and product yield with install-readiness checks.
Pomodoro Timer Plan Pomodoro focus rounds with custom breaks, a live countdown, goal ETA, schedule rows, time-mix chart, and quiet browser cues.
Pool Filter Size Calculator Size a pool filter from volume or design flow, compare sand, cartridge, and DE media area, and flag pump, pipe, margin, and cleaning checks.
Pool Volume Calculator Estimate pool water volume from shape, depth, displacement, fill rate, turnover target, and label-dose scaling with gallons and sensitivity checks.
Port Exposure Summary Checker Summarize port exposure rows into a prioritized review list, flagging public high-risk services, missing owners, and host cleanup scope.
Port List Checker Normalize messy TCP and UDP port lists into compact scanner strings, IANA bands, service-risk cues, and warnings for ranges or bad tokens.
Post Hole Concrete Calculator Estimate concrete bags for post holes from diameter, depth, post displacement, gravel base, collar height, waste margin, and bag yield.
PostgreSQL EXPLAIN Plan Analyzer Review PostgreSQL EXPLAIN text, JSON, or XML for high-cost nodes, row-estimate drift, scans, spills, buffers, and tuning clues.
Postgres Work Mem Calculator Size PostgreSQL work_mem from RAM, active query slots, hash weighting, and spill evidence, with safer global defaults and override hints.
Posttraumatic Stress Disorder Checklist (PCL-5) Assessment Complete a past-month PCL-5 PTSD checklist, compare 31+ and 33+ screening cut points, and review DSM-5 cluster counts before sharing.
Power Factor Calculator Calculate power factor from kW and kVA, size leading or lagging kVAR correction, and estimate capacitor microfarads with field checks.
Pranayama Sequence Planner Plan a pranayama breathing sequence with timed ratios, prep, rests, cooldown, live rehearsal cues, phase balance, and validation warnings.
Pre-Writing Strokes Sheet Generator Create printable pre-writing stroke sheets with trace, fade, and try lanes, direction cues, readiness checks, and local worksheet exports.
Pregnancy Caffeine Limit Calculator Count pregnancy caffeine for the day, compare it with a 200 mg or custom target, and see remaining allowance, servings that fit, and cautions.
Pregnancy Due Date Calculator Estimate your pregnancy due date from LMP, conception, IVF transfer, or ultrasound dates, with term windows and care-planning checkpoints.
Pregnancy Weight Gain Range Calculator Compare pregnancy weight gain with BMI-based singleton or twin ranges, week-to-date bands, and clinician-review warnings for unusual trends.
Pressure Washer Nozzle Size Calculator Calculate pressure washer nozzle size from pump flow, working pressure, and nozzle count, then compare stocked tips, wear, and ratings.
Pressure Washing Quote Calculator Estimate a pressure washing quote from surface scope, soil level, access, labor, chemicals, travel, minimum charge, and margin floor.
Primary Care PTSD Screen (PC-PTSD-5) Screen PC-PTSD-5 past-month symptoms after the trauma gate, compare 3+ and 4+ cut points, and review endorsed areas for follow-up.
Profit Margin Calculator Calculate gross margin from revenue and COGS, compare markup with target-revenue gaps, and add optional expense or fee checks for pricing decisions.
Progressive Muscle Relaxation (PMR) Coach Build a progressive muscle relaxation routine with tense-relax pacing, body-map steps, live phase cues, comfort checks, and exports.
Project Budget Burn Calculator Estimate project budget burn from spend, commitments, dates, and progress, then compare forecast methods, runway, EVM signals, and review exports.
Project Quote Calculator Build a fixed-fee project quote from labor, expenses, buffer, overhead, margin, tax, and deposit checks before sending a price.
Projected Adult Height Calculator Estimate projected adult height from child height, age, sex, and parent heights with range, percentile, and family-band checks.
Prometheus Cardinality Cost Calculator Estimate Prometheus cardinality cost from active series, label fan-out, retention, and pricing assumptions with cleanup savings and PromQL checks.
Prometheus Retention Storage Calculator Plan Prometheus retention storage from active series or samples/sec, including WAL/head reserve, disk headroom, and retention.size guidance.
Prometheus Scrape Config Generator Generate Prometheus scrape YAML from targets, labels, timing, and limits, then check grouping, overrides, and audit warnings before reload.
Prompt String 1 (PS1) Generator Build a Bash PS1 prompt from ordered tokens, ANSI styling, imported strings, previews, warnings, and setup notes for shell testing.
Propane Tank Runtime Calculator Plan propane tank runtime from tank size, fill level, BTU load, reserve, daily use, fuel cost, and vapor-flow checks before refills.
Properties Converter Convert Java .properties text into JSON, YAML, INI, env, and normalized properties output with duplicate-key, path, and type checks.
Protein Intake Calculator Plan daily protein grams from body weight, goal, training load, diet pattern, meal count, current intake, calories, and health cautions.
Proxy Server Checker Check proxy and CDN header evidence from pasted logs or the current request, trace trusted hops, and flag spoofed client-IP risks.
Psychological Flexibility Assessment (AAQ-2) Score the seven-item AAQ-II, read the 7 to 49 inflexibility direction, review item support cues, and export a private self-report summary.
Pull Request Cycle Time Calculator Measure pull request cycle time from PR timestamps, compare review pickup delays and slow-tail percentiles, and spot rows that need cleanup.
Punycode IDN Converter Convert Unicode domains and xn-- Punycode labels in your browser, with DNS length checks, script warnings, and copy-ready forms.
QR Batch Generator Generate QR image batches from pasted rows or CSV/TXT files, then review duplicates, readiness warnings, manifests, and ZIP downloads.
QR Label Sheet Generator Create printable QR label sheets from CSV or text rows, with stock presets, payload-density checks, contrast warnings, and local exports.
Qibla Finder Find the Qibla direction from IP lookup, city search, GPS, or manual coordinates with true or magnetic bearings and turn guidance.
QoS Bandwidth Allocation Calculator Plan QoS class shares from a parent bandwidth rate, then see reserved Mbps, best-effort headroom, priority pressure, and burst ceilings.
Quarterly Estimated Tax Calculator Estimate 2026 U.S. federal quarterly tax payments, compare safe-harbor targets, and plan due-date amounts from income and withholding.
Queue Buffer Delay Calculator Calculate queue buffer delay from buffer size and link rate, then compare full-queue latency, occupancy, BDP, and target limits.
Queue Worker Capacity Calculator Plan queue worker counts from arrival rate, throughput, backlog, drain time, and utilization headroom with cap and delay warnings.
Quick Response (QR) Code Decoder Decode a QR image in your browser, inspect the recovered payload, and catch URL, OTP, Wi-Fi, short-link, or private-host risks before opening.
Quick Response (QR) Code Generator Create QR codes for URLs, Wi-Fi, contacts, messages, calls, email, or events with readiness scoring, logo checks, and image downloads.
RACI Matrix Generator Build a RACI matrix from activity rows, then catch missing owners, overloaded roles, consultation sprawl, and handoff issues before sharing.
RADIUS Client Config Generator Build FreeRADIUS client stanzas from NAS CSV rows, with secret checks, address-scope warnings, hardening choices, and review output.
RADIUS Request Load Calculator Estimate RADIUS requests per second from access, accounting, retries, and failover assumptions, then compare active-pool headroom.
RAID Capacity and Sizing Calculator Plan RAID usable capacity from drive count, drive size, layout, hot spares, overhead, and reserve with target-fit and sizing-path checks.
RAID Performance Calculator Estimate RAID IOPS and throughput from drive benchmarks, read-write mix, write locality, rebuild reserve, controller caps, and degraded targets.
RAID Planning Suite Plan a RAID layout with plannable capacity, workload headroom, rebuild exposure, URE pressure, growth runway, charts, and JSON reports.
RAID Reliability and MTTDL Calculator Estimate RAID MTTDL from AFR, rebuild time, URE rate, spares, correlation, and fleet size with loss probabilities and mitigation checks.
RAID Sizing Calculator Plan RAID and RAID-Z usable capacity from layout, drive size, hot spares, fill headroom, chassis bays, and rebuild-risk assumptions.
RAND SF-12 Health Survey (SF-12) Score 12 SF-12 health answers into an inspectable 0-to-100 domain profile with PCS/MCS comparison, charts, and norm-scoring cautions.
RAND SF-36 Health Survey (SF-36) Score RAND SF-36 answers into eight 0-to-100 health domains, compare physical and mental means, and keep the one-year change item separate.
ROI Calculator Compare investment cost with total return, annualized ROI, payback, and benchmark gap, then audit assumptions with charts and JSON.
RPO/RTO Gap Calculator Compare RPO/RTO targets with measured recovery evidence, flag data-loss or restore-time gaps, and estimate added change or downtime exposure.
RSA Keys Converter Convert RSA PEM keys between PKCS#1, PKCS#8, encrypted private, and public wrappers with local parsing, fingerprints, and export checks.
RSU and Stock Option Tax Calculator Estimate U.S. taxes for RSU vests, NSO exercises, and ISO sales with AMT, payroll withholding, capital gain, and cash gap checks.
Race Finish Time Calculator Estimate a race finish clock from distance, pace, or speed, then check split plans, pacing shape, planned stops, and cutoff margin.
Race Finish Time Predictor Predict a race finish from a recent result, then compare Riegel pace, even splits, condition scenarios, and charted sensitivity.
Race Pace and Finish Time Suite Build a race pace plan from a target time, speed, prior race, or training block with split checkpoints, stop allowances, and scenario charts.
Race Timer Suite Track live race splits or paste stopwatch notes, compare pace by segment, and export charts, split ledgers, and summaries for post-race review.
Rack Power Density Calculator Model rack power density from device watts, feed limits, growth, and power factor with failover headroom, heat load, and W/U cues.
Random Number Generator Generate random integers or decimals from a range, compare secure and seeded draws, and inspect repeats, coverage, bias, and exports.
Random Picker Pick random names or rows from a list with seeded replay, weights, group caps, inclusion-odds estimates, and a clear draw manifest.
Range Hood CFM Calculator Size a range hood from hood width, burner output, kitchen volume, duct velocity, and makeup-air limits before comparing real models.
Rate Limit Backoff Schedule Calculator Plan retry waits for rate-limited APIs with Retry-After floors, jitter options, timeout checks, and shared-client pacing warnings.
Rate of Perceived Exertion (RPE) Calculator Convert Borg, CR10, or lifting RPE into normalized intensity, scale equivalents, heart-rate cues, and sRPE load bands for workout review.
Readability Checker Check English readability from pasted text or TXT files with grade estimates, reading-ease bands, sentence flags, word cues, and charts.
Reading Fluency WCPM Calculator Calculate WCPM from attempted words, errors, and exact reading time, then compare accuracy, benchmark bands, and progress notes.
Reading Level Checker Check an English passage for readability grade, formula spread, target-band fit, and sentence or long-word flags before revising.
Rebar Calculator Estimate slab rebar quantities from cover, spacing, bar size, stock length, waste, and material rate with grid counts, weight, and order checks.
Recruiting Pipeline Metrics Calculator Calculate recruiting funnel conversion, drop-off, offer acceptance, hire rate, and time to fill from stage counts with warnings for data gaps.
Redis Memory Size Calculator Size Redis maxmemory and host RAM from key counts, value sizes, TTL overhead, replicas, buffers, RSS headroom, and shard-fit warnings.
Redundant Array of Independent Disks (RAID) Calculator Calculate RAID usable capacity from disk sizes, layout, spares, overhead, and reserves, with failure tolerance and rebuild-risk checks.
Regex Sample Matches Checker Test a JavaScript regex against examples that should pass or fail, with whole-line matching, flag checks, match spans, and timeout guards.
Regex Tester Test a JavaScript regex against pasted text or files, inspect match spans and capture groups, catch timeout warnings, and preview replacements.
Relationship Assessment Scale (RAS) Check relationship satisfaction with the seven-item RAS, see how reverse-scored regret and problem items affect the total, and review item cues privately.
Release Cutover Window Calculator Plan a release cutover window from phase minutes, contingency, rollback reserve, safety floor, gate margin, runway scenarios, and charts.
Release Notes Generator Turn commit lines, PR lists, or release bullets into grouped Markdown notes with parser warnings, readiness gates, and review ledgers.
Rent Split Calculator Split rent, utilities, and deposits across roommate shares with premium-room weights, rounded payments, fairness notes, and exportable rosters.
Rental Property Cash Flow Calculator Estimate rental property cash flow from rent, vacancy, reserves, financing, DSCR, cap rate, stress tests, and target rent checks.
Replication Backlog Time Calculator Estimate replication backlog catch-up time from write rate, outage duration, usable capacity, compression, target windows, and headroom warnings.
Resistor Color Code Decoder Decode resistor color bands into ohms, tolerance limits, TCR drift estimates, and orientation checks for 4-, 5-, and 6-band parts.
Resistor Combination Finder Find resistor networks for a target resistance, compare E-series or custom stock, and screen nominal error, tolerance, and power stress.
Resolver Policy Difference Comparator Compare DNS-over-HTTPS resolver answers across open, security, and family profiles to spot policy splits, zero-sinks, and DNSSEC drift.
Resonant Frequency Calculator Calculate LC resonant frequency from inductance and capacitance, then compare tolerance spread, loaded Q, bandwidth, and reactance crossing.
Retaining Wall Block Calculator Estimate retaining wall blocks, caps, base gravel, drain rock, pipe, fabric, and cost from wall dimensions, product sizes, and waste.
Retirement Tax Savings Calculator Model a 2026 retirement contribution against IRS limits, federal tax savings, Saver's Credit, paycheck cost, employer match, and growth.
Reverse DNS (PTR) Checker Check reverse DNS for an IP or hostname, verify forward-confirmed PTR names, compare public resolver views, and flag stale or weak records.
Reverse DNS Zone Generator Generate reverse DNS zone text for an IPv4 CIDR block with PTR rows, SOA checks, RFC2317 parent records, and review-ready JSON.
Revised Dyadic Adjustment Scale (RDAS) Assessment Complete the 14-item RDAS, compare the 0 to 69 relationship adjustment score with the 48 cutoff, and inspect domain and burden cues.
Revision Schedule Planner Build a revision timetable from exam dates, subject targets, weekly availability, spacing rules, coverage gaps, and daily load warnings.
Ring Size Converter Convert ring diameter, circumference, or regional labels into US, UK/AU, ISO/EU, and nearby size rows with fit guidance and deltas.
Risk Register Generator Build a risk register from pasted rows or CSV, score inherent and residual exposure, and queue owner gaps, high risks, and review dates.
Road Signs Quiz Practice US MUTCD road-sign meanings with regulatory, warning, or mixed quizzes, seeded retakes, missed-answer review, and accuracy charts.
Robots.txt Generator Generate a robots.txt draft with crawler groups, path rules, sitemap hints, import parsing, and publish warnings for safer crawl control.
Roof Sheathing Sheets Calculator Estimate roof sheathing sheets from footprint or measured area, including pitch, waste, panel size, H-clips, fasteners, cost, and layout warnings.
Roofing Calculator Calculate shingle bundles from roof area, pitch, waste, bundle coverage, accessory lengths, and material cost with order checks.
Rooftop Solar Fit Calculator Estimate how many rooftop solar panels fit after setbacks and keepouts, then compare DC kW, annual kWh, target size, and layout warnings.
Rosenberg Self-Esteem Scale (RSES) Assessment Score the Rosenberg Self-Esteem Scale, review direct and reverse-scored items, and compare the 0-to-30 total with guide bands and exports.
Rounding Calculator Round decimal text to places, significant figures, place values, or custom increments with exact tie-rule traces and error checks.
Rubric Generator Generate a rubric matrix from assignment goals, criteria, weights, and levels, with point allocation, descriptor drafts, audit checks, and exports.
Run-Walk Interval Calculator Plan run-walk intervals from distance, segment paces, and marker stops, then compare finish time, cue load, route markers, and pace charts.
Running Record Accuracy Calculator Score a running record from running words, errors, self-corrections, time, and comprehension, with bands, pace, and cue-pattern notes.
Runway Crosswind Component Calculator Calculate runway crosswind, headwind, tailwind, and gust margins from wind reports, runway headings, magnetic variation, and pilot limits.
S3 Bucket Policy Public Access Checker Review an S3 bucket policy for public principals, cross-account grants, service trust gaps, and Block Public Access evidence before approval.
S3 Lifecycle Policy Generator Build an S3 lifecycle policy with object filters, transition and expiration checks, review notes, and AWS-ready JSON or command output.
SAML Assertion Timing Checker Review SAML assertion timing from XML, SAMLResponse, or OAuth assertion captures with skew, bearer-expiry, replay-cache, and session evidence.
SAML Metadata Validator Review SAML metadata XML for import blockers, endpoint policy, entity roles, certificate dates, signature presence, and readiness evidence.
SARIF Security Findings Analyzer Analyze SARIF logs for release-gate findings, priority rows, rule and file hotspots, severity charts, and fingerprint coverage warnings.
SAS-Style Anxiety Proxy Assessment Check recent anxiety patterns with a disclosed SAS-style proxy that scores 20 items into a 25-to-100 index with domain clues and cutoffs.
SBOM Component Risk Analyzer Review CycloneDX, SPDX, Syft, or CSV SBOM evidence, rank component risk, and separate vulnerability, license, and identity review work.
SCSS to CSS Compiler Compile SCSS, indented Sass, or plain CSS in your browser, then check compiled CSS, source maps, metrics, and Sass audit warnings.
SHAS-A Adult Health Anxiety Proxy Assessment Check adult health-anxiety patterns with a disclosed 14-item proxy, then review a 0-to-42 score, cutoff context, top area, and cue table.
SLA Availability Calculator Calculate SLA availability from downtime, maintenance treatment, and elapsed window, then see remaining budget, burn rate, and breach risk.
SLO Burn Rate Alerts Generator Generate Prometheus SLO burn-rate alert rules with multi-window tiers, budget math, routing labels, YAML formats, and review tables.
SLOAN Personality Code Assessment (Proxy) Build a SLOAN-style personality code from 20 Mini-IPIP answers, with axis strength, swing-letter cautions, spread, and item evidence.
SMIMEA / OPENPGPKEY Lookup Look up SMIMEA or OPENPGPKEY DNS records for a mailbox, derive the owner name, and compare DNSSEC, resolver, and payload evidence.
SNMP Polling Load Calculator Estimate SNMP polling load from devices, OIDs, intervals, retries, packet sizing, SNMPv3 overhead, MTU risk, and poller headroom.
SPF Record Generator Build an SPF TXT record from real sender paths, provider includes, IP ranges, A/MX options, redirects, and lookup-budget warnings.
SPF Validation Report Check a domain's SPF record, trace include and redirect lookup cost, and spot duplicate records, weak endings, or over-limit policies.
SQL Formatter Format pasted SQL for review with dialect-aware layout, statement ledgers, parser-fallback caveats, and local file handling in your browser.
SQL INSERT Generator Build SQL INSERT statements from pasted rows or local CSV/TXT files, with dialect-aware quoting, inferred literals, and row and column review.
SQLite Manager Inspect a SQLite database in your browser, run focused SQL, verify rowid-table edits, and export rows, query history, dumps, or a copy.
SRV / NAPTR Service Discovery Check Trace SIP, SIPS, XMPP, or LDAP service discovery with public resolver comparison, fallback notes, and terminal host address checks.
SSD Endurance (DWPD/TBW) Calculator Calculate SSD endurance from DWPD or TBW, compare workload writes with reserve and derating, and use SMART wear clues to time replacement.
SSH Algorithm Policy Checker Check SSH algorithm lists from configs or scans against a chosen policy, then review blockers, legacy exceptions, and config patch cues.
SSH Config Snippet Generator Generate OpenSSH Host blocks from CSV host rows, with defaults, ProxyJump routes, identity-file choices, and review warnings before paste.
SSL CA Matcher Check whether a TLS leaf certificate belongs with a candidate issuer CA, with signature proof, DN checks, CA flag status, expiry risk, and policy scoring.
SSL Certificate Chain Checker Check a live host or pasted PEM chain for missing issuers, hostname mismatch, expiry risk, weak crypto, and install-ready certificate bundles.
SSL Checker Check a public hostname with SSL Labs evidence, spot weak TLS endpoints, chain gaps, legacy protocols, and renewal risk in a fix queue.
SSL Expiry Checker Check a live TLS host for certificate expiry, renewal timing, SAN coverage, issuer, serial, and fingerprints before outages reach users.
SSL Matcher (Certificate, CSR, and Key) Match a TLS certificate against a CSR or RSA private key with SPKI pin comparison, chain warnings, encrypted-key handling, and exportable evidence.
SSL OCSP Checker Check OCSP revocation evidence for a public TLS host or pasted certificate, with responder status, freshness timestamps, warnings, and replay text.
SVG Placeholder Generator Build SVG placeholders with exact dimensions, labels, contrast warnings, preview output, and HTML or CSS snippets for layout handoff.
SWOLF Analyzer Analyze swim split times and stroke counts into SWOLF trends, drift alerts, lap calls, and charts for comparable pool training sets.
Salary Raise Budget Calculator Plan a salary raise budget from employee rows or one salary pool, including fiscal proration, employer burden, cap variance, and scenarios.
Sales Tax Calculator Calculate sales tax from pre-tax, tax-included, or receipt tax-line amounts, with cent rounding checks, rate comparisons, charts, and exports.
Sallen-Key Filter Calculator Calculate Sallen-Key low-pass, high-pass, or band-pass stages from real R/C values, then check f0, Q, preferred parts, GBW, and response curves.
SameSite Cookie Policy Checker Check Set-Cookie headers for SameSite delivery, Secure pairing, prefixes, partitioned cookies, and SSO or embedded-flow breakage.
Satcom Status Tracker Check satellite TLE freshness, orbit class, SatNOGS context, and planning readiness before using a record for link planning or fleet triage.
Satellite Pass Tracker Forecast satellite passes from TLE data and observer coordinates, then compare rise, set, elevation, azimuth, charts, and calendar exports.
Satisfaction With Life Scale (SWLS) Assessment Score the five-item SWLS from whole-life ratings, then review the official band, midpoint drift, item anchors, charts, and shareable evidence.
Savings Goal Calculator Plan a savings goal timeline, required monthly deposit, or ending balance with compounding, step-ups, date checkpoints, and warnings.
Schengen 90/180 Day Calculator Track Schengen short-stay days with rolling 180-day checks, proposed-trip warnings, passport-stamp parsing, and re-entry planning.
Schutte Self-Report Emotional Intelligence Test (SSEIT) Score the 33-item SSEIT in your browser, with reverse-keyed items, a 33 to 165 total, lane means, charts, and response ledger.
Scissor Skills Sheet Generator Create printable scissor skills worksheets with leveled cut paths, start and stop cues, setup notes, and repeatable seeded versions.
Score Distribution Analyzer Analyze score rows or CSV marks as percentages, then compare mean, median, pass rate, grade bands, outliers, and rejected-row checks.
Seating Chart Generator Create classroom seating charts from roster text or CSV, honoring fixed seats, empty desks, seeded shuffles, group balance, and audit notes.
Secret Pattern Sample Checker Scan config, log, and ticket samples for secret-like values with masked findings, provider-pattern hits, entropy scoring, and rotation cues.
Secure Password Generator Generate account-ready passwords in your browser, tune character rules, and compare entropy, crack-time, zxcvbn strength, and history.
Secure Shell (SSH) Client Config Editor Clean up an SSH client config in your browser, test Host wildcards, and review lint, security, directive, and diff reports before copying.
Secure Shell (SSH) Key Fingerprint Checker Check an SSH public key, compare SHA256, MD5, or legacy SHA-1 fingerprints in your browser, and prepare host-key records with trust warnings.
Secure Shell (SSH) Public Key Converter Convert an SSH public key between OpenSSH, SSH2, and PEM in your browser, then compare fingerprints and catch private-key or extra-key mistakes.
Secure Shell (SSH) Public Key Extractor Extract a public SSH key from pasted or uploaded key text, compare SHA-256 and MD5 fingerprints, and build a reviewed authorized_keys line.
Secure Sockets Layer (SSL) Certificate Converter Convert PEM, DER, P7B, and PFX certificates in your browser, inspect chain expiry and key handling, and download the right artifact.
Secure Sockets Layer (SSL) Certificate Decoder Decode SSL certificate text or files locally, inspect SAN names, dates, fingerprints, usage fields, and chain entries before deployment checks.
Self-Compassion Scale Short Form (SCS-SF) Assessment Score the 12-item SCS-SF, reverse key harsh-self items, and compare the 1-to-5 mean with pair cues, prior score context, and charts.
SemVer Bump Required Checker Check release notes and commit subjects for the required SemVer bump, compare a planned version, and review breaking, feature, fix, and neutral signals.
Semaphore Signals Quiz Practice semaphore A-Z letter recognition from flag diagrams, repeat seeded drills, and review missed poses with a ledger, chart, and JSON export.
Sewing Thread Consumption Calculator Estimate sewing thread for garment orders from stitch-class rows, wastage, package lengths, cone rounding, and cost per garment before buying cones.
Shape Tracing Sheet Generator Create printable shape tracing worksheets from presets or custom lists with repeat counts, color prompts, teacher cues, warning checks, and exports.
Shoe Size Converter Convert shoe sizes from foot length or regional labels, compare US, UK, EU, JP, CN, KR, MX, and BR sizes, and flag fit or unit warnings.
Shop Lighting Lumens Calculator Plan a shop lighting grid from room size, target lux, fixture lumens, loss factors, spacing risk, headroom, and yearly energy cost.
Short Dark Triad (SD3) Assessment Complete the 27-item SD3 self-report, compare the three trait means, and review reverse-scored item evidence without sending answers for scoring.
Sick, Control, One Stone, Fat, Food (SCOFF) Screen SCOFF eating-disorder concerns with five yes/no cues, a 0-to-5 score, the 2+ cut-point, item pattern notes, and follow-up guidance.
Sight Word Practice Sheet Generator Create sight-word practice sheets from presets or custom lists with local file import, teacher keys, word ledgers, home notes, and warnings.
Significant Figures Calculator Count significant figures in a written number, see each digit's role, resolve trailing-zero ambiguity, and preview rounding error.
Simple Interest Calculator Calculate simple interest from principal, rate, term, day-count basis, and withholding, with maturity totals, checkpoints, and sensitivity cues.
Sitemap URL Extractor Extract sitemap URLs from pasted XML, text files, or a public URL, then filter, de-duplicate, audit coverage, and export clean crawl lists.
Sleep Debt Calculator Calculate sleep debt from a 7- or 14-night log, with gross deficit, oversleep credit, recovery-day estimates, and bedtime targets.
Sleep Hygiene Gap Checker Find sleep-hygiene gaps across caffeine, screens, schedule, naps, room, and light, then rank a focused reset queue for retesting.
Sleep Hygiene Path Planner Turn sleep scores and diary estimates into a ranked hygiene path with safety cautions, sleep-debt checks, and CBT-I window guidance.
Sleep Sound Generator Build a sleep sound mix with colored-noise recipes, safe-volume capping, timers, fade shaping, coach notes, and masking charts.
Sleep Window Adjustment Planner Plan weekly sleep-window changes from sleep-efficiency percentages, fixed wake time, confirmation rules, and safety checks before changing bedtime.
Slug Generator Generate readable slugs for URLs, files, anchors, and CSS selectors from single titles or batches with Unicode, trimming, and collision checks.
Smoke Detector Placement Calculator Plan smoke alarm locations for bedrooms, sleeping areas, and each level, with buy counts, age, clearance, interconnect, and install checks.
Snapshot Storage Growth Calculator Estimate snapshot reserve capacity from dataset churn, retention, reduction ratio, headroom, and current reserve gaps, with stress and trend checks.
Snow Plowing Seasonal Contract Calculator Price or audit a seasonal snow plowing contract with event costs, deicing material, weather reserve, margin targets, caps, and scenario checks.
Social Interaction Anxiety 6-Item Proxy Screener Review social interaction anxiety with a disclosed six-item SIAS-6-style proxy, a 0-to-24 total, 7+ cue context, and export warnings.
Sod Pallet Calculator Estimate sod pallets from lawn measurements, supplier coverage, waste, order policy, delivery weight, and same-day install checks.
Soil Amendment Calculator Calculate compost, lime, sulfur, gypsum, bag counts, staging, and costs from bed area, soil-test targets, texture, and product strength.
Soil Volume Calculator Estimate soil volume for raised beds and top-ups, with bag counts, bulk-order rounding, delivery weight, and wheelbarrow load checks.
Solar Panel Array Size Calculator Estimate solar panel count and DC array size from bill kWh, sun hours, losses, module watts, roof area, and inverter ratio checks.
Solar Payback Period Calculator Estimate when rooftop solar savings repay net upfront cost with incentives, export-credit rules, degradation, and annual cash-flow checks.
Sourdough Feeding Schedule Calculator Plan sourdough starter feedings by ratio, hydration, temperature, flour, and target time with ingredient weights and peak-window checks.
Spelling Test Generator Create printable spelling tests from word lists, with sentence prompts, answer keys, teacher scripts, review ledgers, and word-balance checks.
Sports Scoreboard Tracker Track a live multi-sport score, fouls, timeouts, possession, and event history with sport presets, correction cues, and score-flow review.
Spray Foam Kit Coverage Calculator Estimate spray foam kit quantities from sprayed area, target depth or R-value, label yield, field loss, waste, reserve, and cost checks.
Square Footage Calculator Calculate square footage for rooms, patios, floors, and material orders with shape formulas, 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 while keeping trace text in the browser.
Stair Stringer Calculator Lay out straight stair stringers from finished rise, tread run, support spacing, and code profile, with throat, stock length, and comfort checks.
Standby Power Cost Calculator Estimate yearly standby power cost from watts, schedules, rates, and cuttable loads, with savings, payback, bill-share, and CO2 context.
Starfield Screensaver Simulator Design a browser starfield screensaver, tune star density, warp, comets, and FPS, then compare quality scale and flight notes.
Static Route Commands Generator Generate static route add, replace, and delete commands for Linux, Windows, Cisco-like, Junos, and firewall CLIs with route-row checks.
Steps to Calories Calculator Calculate active calories from steps, body weight, step length, pace, and terrain, then plan target steps with assumptions and ranges.
Stimulus Control Steps Planner Build a stimulus-control plan for insomnia with leave-bed cues, fixed wake timing, fallback activities, adherence priorities, and a response path chart.
Strength Progression Planner Plan a week-by-week strength block from a working load, reps, deload timing, and plate rounding with rule checks and a load curve.
Strength Standards Calculator Compare squat, bench, deadlift, or overhead press 1RM against bodyweight standards with recent-set estimates and source-reviewed targets.
Stud Wall Framing Calculator Estimate a stud wall framing takeoff with common studs, openings, plates, cut lengths, waste, and board-cost rounding from one wall run.
Subdivision Flags Quiz Practice subdivision flags with seeded country or region drills, timer options, mastery splits, and a ledger of missed names and timeouts.
Subfloor Sheets Calculator Estimate a subfloor sheet order from room dimensions or plan area, including waste, spare panels, fasteners, adhesive, seam checks, and cost.
Subjective Happiness Scale (SHS) Assessment Assess subjective happiness with the 4-item SHS, then review the 1-to-7 mean, reverse-scored item, balance cue, score arc, and answer pattern.
Subnet Planning Suite Plan IPv4 child subnets from a parent CIDR, compare usable host capacity with reserve, pack VLSM demand rows, and export address ledgers.
Substitute Teacher Plan Generator Build a substitute teacher packet from schedule rows, activity notes, routines, and safety details with readiness checks and printable handoff text.
Sump Pump Size Calculator Size a sump pump from pit inflow, lift, pipe losses, safety margin, pump-curve capacity, and cycle warnings before choosing a model.
Survey Questions Generator Draft survey questions from a research goal, audience, topic areas, and response mix, with fatigue cues, type balance, and pilot checks.
Switchport Config Generator Generate access or trunk switchport CLI for Cisco IOS, NX-OS, or Arista EOS with VLAN normalization, command notes, and paste-safety warnings.
Switzerland Rail Service Tracker Track Swiss station departures or arrivals with live public data, platform and delay checks, route-stop detail, auto-refresh, and exports.
Syslog Severity Mix Analyzer Analyze syslog and application log samples by severity, error+ share, and noisy emitters with PRI, word, and threshold checks.
Syslog Storage Calculator Estimate searchable syslog storage from EPS, event size, retention, compression, index overhead, stored copies, reserve, and disk headroom.
TB/TiB/GB/GiB Converter Convert TB, TiB, GB, and GiB through exact bytes, compare marketed drive labels with binary readouts, and write clear capacity notes.
TLS Handshake Load Calculator Estimate TLS handshake CPU from request rate, connection reuse, full versus resumed costs, and surge peaks so edge capacity plans have room.
TLS Handshake Trace Trace a live TLS endpoint, inspect SNI, ALPN, cipher, certificate chain, and phase timings, and separate DNS, TCP, and TLS failures.
TLS-RPT Record Validator Validate a TLS-RPT record, review rua report destinations and related mail-policy signals, and build a DNS TXT snippet for publishing.
TOML Converter Turn TOML into config outputs with parse checks, path ledgers, type previews, and schema sketches so migrations are easier to audit.
Tab-Separated Values (TSV) Converter Turn TSV or delimiter-separated text into reviewed tables, column profiles, and typed exports with header checks and row-width warnings.
Tabata Workout Timer Build a Tabata timer from classic 20/10 or custom intervals, then track workout density, cue sheets, timeline rows, and run logs.
Table Data Converter Turn pasted tables or local text files into clean Markdown, JSON, HTML, or delimited output with header repair, previews, and formula guards.
Table Tennis Scoreboard Tracker Keep table tennis scoring aligned with server rotation, deuce rules, game commits, match format, point-pressure charts, and export records.
Tablecloth Size Calculator Calculate tablecloth size from table shape, drop, height, stock catalogs, fit rules, quantity, pricing, and sewing-cut allowances.
Tap-Tempo Beats Per Minute (BPM) Calculator Tap a steady rhythm, convert eighth, dotted-quarter, half-note, or quarter-note pulses to BPM, and review jitter, drift, confidence, and timing guides.
Target and Maximum Heart Rate Calculator Calculate target heart-rate bpm from age or known max HR, compare %Max and Karvonen ranges, and check zones, windows, and current HR.
Tax Refund Estimator Estimate your U.S. federal refund or balance due from wages, credits, withholding, payments, offsets, and simple safe-harbor checks.
Tax Withholding Calculator Calculate 2026 U.S. federal paycheck withholding, compare paystub pace with W-4 worksheet rules, and plan per-check adjustments before payroll changes.
Tempo Generator / Metronome Build a metronome practice plan with tap tempo, swing feel, accents, ramp blocks, audible playback, and timing tables for each beat grid.
Ten-Frame Counting Sheet Generator Generate printable ten-frame counting sheets for 0 to 20 practice with task filters, seeded mixes, answer keys, and frame-fill checks.
Ten-Item Personality Inventory (TIPI) Assessment Score a 10-item TIPI Big Five profile, check direct and reverse-keyed answers, and review trait spread with chart and export options.
Tennis Scoreboard Tracker Keep a tennis score from any point, with server-first calls, no-ad and tiebreak rules, pressure cues, charts, and JSON exports.
Terminal Installer Simulator Generate browser-local installer terminal replays for package-manager demos with seeded runs, warning jitter, progress traces, and ledgers.
Terraform Plan Summary Analyzer Review Terraform plan JSON or text before apply, with destructive-change gates, drift signals, output-change checks, and provider impact charts.
Terraform Variable Defaults Checker Review Terraform variable blocks for risky defaults, secret-like fallbacks, type mismatches, nullable surprises, and prioritized fixes.
Test Case Generator Turn a feature workflow into manual, Gherkin, or automation handoff cases with traceable IDs, edge coverage, and review cues.
Test Curve Calculator Curve raw test scores, compare class-average and grade-band shifts, and audit caps, rounding, skipped rows, and formulas before posting grades.
Test Score Calculator Calculate a test score from correct, missed, or earned points, then compare percent, grade band, next-band gap, and charted cutoffs.
Test Shard Runtime Calculator Estimate CI test shard wall time from suite size, setup tax, runner concurrency, timing coverage, target gaps, and runner-minute cost.
Text Diff Comparator Compare original and revised text locally, then review unified diff hunks, change ledgers, ignore-option matches, warnings, and exports.
Text Encryptor & Decryptor Encrypt or decrypt small text in your browser with AES-GCM, Argon2id or PBKDF2, portable envelopes, integrity checks, and byte-size evidence.
Text Hash Generator Hash exact UTF-8 text in your browser, compare SHA-2, SHA-3, MD5, SHA-1, or RIPEMD-160 digests, and save exportable comparison records.
Text Sorter Sort pasted lists or TXT/CSV text in your browser with natural order, cleanup filters, seeded shuffle, counts, and copy-ready output.
Thinset Bag Calculator Calculate thinset bags from tile area, trowel coverage, waste, skim-coat allowance, bag weight, spares, and wet-area contact checks.
Thread Pool Saturation Calculator Estimate thread pool saturation from arrival rate, task time, queue depth, wait targets, and capacity scenarios with headroom warnings.
Tie Down Strap Capacity Calculator Plan tie-down strap capacity from cargo weight, WLL, securement path, blocking, and length rules with weak-link and margin checks.
Tile Calculator Calculate tile boxes from room area, tile size, grout joint, waste, cartons, spare boxes, and price with scenarios and buying checks.
Tile Grout Bags Calculator Estimate tile grout bags from area, tile size, joint width, depth, density, waste, and bag size with sensitivity and ordering checks.
Time Calculator Calculate elapsed time, overnight spans, break deductions, and clock shifts with rounding, audit charts, ledgers, and shareable exports.
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 Build a time-lapse shoot plan with interval, clip length, frame count, storage, battery, and exposure-gap warnings before setting the camera.
Timecode Duration Calculator Calculate timecode duration from start and end labels with drop-frame checks, inclusive or exclusive endpoints, handle frames, and handoff-ready outputs.
Tip Calculator Calculate a restaurant tip from subtotal, tax, service charges, and split rules, with receipt checks that flag rounding or rate mistakes.
Tire Replacement Cost Calculator Estimate tire replacement cost with installed totals, tax, rebates, mileage value, fee-share checks, and shop-quote variance in one ledger.
Tire Size Comparison Calculator Compare tire sizes by diameter, width, sidewall, ride-height, speedometer error, AWD review bands, and clearance cushion checks.
Trace CNAME Alias Chain Trace a hostname's public CNAME path across resolvers, verify the final A, AAAA, MX, TXT, or CAA answer, and catch cutover drift.
Traceroute Hops Analyzer Analyze pasted traceroute, tracert, or MTR output into hop evidence, latency-step findings, loss checks, charts, and shareable exports.
Tracing Worksheet Generator Create printable tracing worksheets for names, letters, numbers, shapes, and strokes with guide lines, formation cues, page estimates, and warnings.
Trailer Payload Capacity Calculator Calculate trailer payload capacity from GVWR, scale weight, cargo, fluids, reserve, axle, tire, and tongue share to find the weakest limit.
Trailer Tongue Weight Calculator Calculate trailer tongue weight from scale readings or a target percent, then compare the band, hitch rating, payload margin, and cargo-shift effect.
Transformer Calculator Calculate transformer turns ratio, secondary turns, full-load current, reflected impedance, and margin checks from RMS voltage and VA inputs.
Translation Quote Calculator Build a translation quote from source words, CAT leverage, language pair, deadline stress, format fees, margin checks, tax, and deposit.
Travel Per Diem Calculator Calculate travel per diem from trip dates, M&IE tiers, first/last-day proration, provided meals, lodging caps, and daily audit tables.
UCLA Loneliness Scale-20 (ULS-20) Assessment Score the 20-item UCLA Loneliness Scale with reverse-scored support items, a 20 to 80 total, connection lenses, and exportable answer review.
UCLA Loneliness Scale-8 (ULS-8) Assessment Score the ULS-8 loneliness scale with reverse-scored positive anchors, a 0 to 100 transformed gauge, item cues, and exportable review.
UCLA Loneliness Short Check Score the three-item loneliness short scale from 3 to 9, compare the top cue and spread, and keep browser-only answers framed as a private self-check.
UK Take-Home Pay Calculator Estimate UK take-home pay for 2026/27 with PAYE, NI, pension treatment, student loans, warnings, charts, and per-period ledgers.
UPS Runtime Calculator Estimate UPS runtime from real load, battery watt-hours, efficiency, health, reserve, and ratings so shutdown margins are easier to size.
URL Blacklist Status Lookup Check a suspicious URL against Safe Browsing, SURBL, and local URL-shape signals, then review scoped verdicts, coverage gaps, and follow-up links.
URL Encode and Decode Tool Encode or decode URL text by context, compare percent escapes and plus-as-space behavior, and catch round-trip problems before copying or opening.
URL Parser Parse a URL or query string locally into components, query rows, masked sensitive values, length signals, and a rebuilt review URL before sharing.
UTM URL Generator Build a GA4 campaign URL from a landing page, keep or replace existing UTM tags, and catch missing fields, channel mismatches, and long links.
Unicode Character Lookup Look up a character, code point, grapheme, or escape with Unicode names, U+ values, UTF bytes, normalization checks, and hidden-text warnings.
Uniform Resource Locator (URL) Decoder Decode percent-encoded URLs or text, inspect query pairs and character bytes, remove common trackers, and preview JSON, Base64, or QR handoffs.
Uniform Resource Locator (URL) Encoder Encode URL text for components, full links, form values, or paths with character maps and query checks before copying or sharing.
Unit Converter Convert measurements across 21 unit categories, audit the base formula, compare equivalent units, and catch temperature or fuel-economy guardrails.
Unit Price Calculator Compare package prices by usable unit with multipacks, shared discounts or fees, waste assumptions, and break-even shelf price checks.
Universally Unique Identifier (UUID) Decoder Decode one UUID into canonical forms, verify version and variant bits, expose timestamps or node fields, and export bit-lane evidence and JSON.
Universally Unique Identifier (UUID) Generator Generate UUIDs for random, name-based, or time-sortable IDs, then inspect canonical form, version markers, namespace inputs, and history.
Uptime Calculator Calculate uptime budgets from SLA targets, downtime, maintenance policy, and elapsed period with burn pace and period-end status checks.
User Story Generator Draft a user story from role, goal, benefit, and acceptance checks with criteria rows, boundary review, readiness warnings, and exports.
User-Agent Parser Parse a User-Agent string or header block into browser, OS, device, bot, token, and Client Hints evidence for support or log triage.
VAT Calculator Calculate VAT from net, gross, or VAT-only amounts, with receipt-style totals, rounding checks, and rate-sweep charts for invoices.
VLAN Capacity Calculator Plan VLAN ID capacity from reserved and existing ranges, then check new segment demand, IPv4 subnet host fit, allocation order, and warnings.
VLAN Config Consistency Checker Compare switch VLAN evidence with trunk policy, native VLAN rules, active database entries, and VLAN 1 exposure before a change.
VLAN Migration Planner Plan VLAN port moves from pasted rows, split work into timed waves, flag trunk and native VLAN risks, and build runbook-ready tables.
VM Migration Time Calculator Plan VM migration windows from memory, disk payload, dirty-page churn, bandwidth, and cutover targets with downtime risk checks.
VPN Tunnel Capacity Calculator Estimate VPN tunnel user capacity from line rate, packet overhead, MTU, peak demand, and gateway caps with load warnings and JSON output.
VSWR Return Loss Converter Convert VSWR, return loss, reflection coefficient, or reflected watts into RF mismatch values, profile guidance, watt estimates, and curve data.
Video Bitrate Storage Calculator Plan video storage from bitrate, duration, cameras, backups, and headroom, with drive counts, shoot warnings, and codec what-if checks.
Video Call Sheet Generator Build a video call sheet with schedule rows, staggered call times, production checks, timeline views, and calendar files for handoff.
Virtual Flowers Generator Design a virtual flower card with repeatable blooms, message text, image downloads, share links, and checksum review before sending.
Virtual Machine Storage Calculator Estimate VM datastore capacity from thin or thick disks, snapshots, swap, growth, reserves, raw protection, and runway timing.
Virtualization Host Capacity Calculator Estimate safe VM capacity after failover, maintenance, CPU and memory reserves, growth headroom, and large-VM placement checks.
Visual IPv4 Subnet Calculator / Splitter Plan IPv4 subnets from a parent CIDR, split or rejoin leaf blocks, and verify usable ranges, broadcasts, size maps, and exports.
Visual Schedule Cards Generator Create printable visual schedule cards from routine rows, with picture cues, first-then layouts, timing checks, flow-map review, and exports.
Vocabulary Matching Sheet Generator Create a vocabulary matching worksheet from term-definition pairs, with seeded shuffles, distractor checks, answer keys, and printable exports.
Volleyball Scoreboard Tracker Keep a volleyball scoreboard with rally points, serve changes, set commits, timeout counts, sideout cues, momentum charts, and JSON exports.
Voltage Divider Calculator Size a loaded voltage divider, solve for R1 or R2, and compare load sag, target error, power, tolerance, and E-series values.
Vulnerability Remediation SLA Calculator Calculate vulnerability remediation due dates from CSV findings, apply severity SLAs and exploited caps, and surface overdue or due-soon queues.
WAN Latency Calculator Estimate WAN round-trip latency from route distance, fiber index, hops, queues, jitter, packet size, app turns, and target headroom.
WHO-5 Well-Being Assessment Score the WHO-5 well-being check for the last two weeks, see raw and percent totals, and review item patterns, charts, and follow-up cues.
WHOIS / RDAP Lookup Check domain registration records with RDAP-first lookup, WHOIS fallback, expiry timing, status clues, nameservers, contacts, and exports.
WPDS Historical Proxy Assessment Review a 24-item WPDS historical proxy, compare cue-lane density, and trace which yes/no answers raised flags without using it as a diagnosis.
WWN and NAA Identifier Lookup Decode WWN or NAA values from SAN paths and logs, normalize the hex, flag fragments, and separate port, node, device, or LUN clues.
Waist to Height Ratio Calculator Calculate waist-to-height ratio from mixed units, compare NICE and legacy bands, and translate half-height cutoffs into waist targets.
Waist to Hip Ratio Calculator Calculate waist-to-hip ratio from waist and hip measurements, compare sex-specific bands, and test whether tape uncertainty could change the screen.
Wallpaper Calculator Estimate wallpaper rolls from wall size, roll label, pattern repeat, openings, waste, spare rolls, tax, and cost before ordering.
Water Heater Size Calculator Size a storage or tankless water heater with peak-hour draws, fixture overlap, temperature rise, reserve, and install checks before comparing models.
Water Intake Calculator Plan a daily drink target from total-water references, food-water share, exercise sweat, serving size, caffeine, and safety flags.
Water Softener Size Calculator Size a home water softener from hardness, iron, water use, salt dose, reserve capacity, regeneration timing, and peak-flow fit.
Water Well Pump Size Calculator Size a residential well pump by flow and total dynamic head, then check yield, tank drawdown, pipe velocity, and pump-curve fit.
Web Server Detector Detect a public URL's visible web server, CDN, or proxy from response headers, redirects, confidence scoring, and origin clues.
WebSocket Connection Capacity Calculator Size WebSocket node pools from peak sockets, memory, egress, descriptor limits, and N+ reserve with bottleneck and scale-out checks.
Wedding Budget Breakdown Calculator Plan a wedding budget from total spend, guest count, category targets, quote pressure, reserve gaps, and paid-versus-due cash timing.
Wedding Invitation Card Generator Design a wedding invitation card with live preview, RSVP QR handoff, signed guest links, wording tables, print checks, and PNG or PDF exports.
Weekly Workout Schedule Planner Plan a weekly workout schedule around goals, days, equipment, and recovery with audit checks, load charts, and calendar exports.
Weight Loss Calculator Plan a weight-change target from body stats, activity, and goal timing, with calorie floors, BMI context, pace warnings, and runway charts.
Weight-for-Age Percentile Calculator Calculate a child's weight-for-age percentile from age, sex, and weight, with WHO/CDC chart context, corrected-age support, and follow-up cues.
Weight-for-Length Percentile Calculator Calculate an infant's weight-for-length percentile from weight, length, sex, and reference source, with WHO/CDC comparison and source-fit notes.
Weighted Grade Calculator Calculate a weighted course grade from syllabus percentages or points, then check remaining averages, dropped rows, grade bands, and weight warnings.
Weighted Rubric Score Calculator Calculate weighted rubric scores from criterion levels, percent or point weights, grade bands, and audit checks for contribution and setup gaps.
Wget Command Generator Build a wget command for downloads, mirrors, API fetches, and FTP pulls with shell-aware quoting, import parsing, and safety warnings.
What Is My Browser Identify your current browser session with support-ready browser, storage, graphics, compatibility, and privacy exposure signals plus share cautions.
What Is My Internet Protocol (IP) Address? Check your public IP address with IPv4/IPv6 detection, ASN, reverse DNS, provider consensus, and approximate location confidence.
What Is My Screen Resolution Check your screen resolution, viewport size, DPR, breakpoint fit, capture dimensions, and PPI clues from the current browser window.
Whole-House Water Filter Size Calculator Estimate whole-house water filter size from peak fixture flow, pressure-drop limits, source-water load, and replacement interval checks.
Wi-Fi Channel Plan Calculator Plan Wi-Fi channel assignments for 2.4, 5, or 6 GHz APs, with DFS filters, PSC-aware 6 GHz primaries, reuse pressure, and exports.
Wifi AP Coverage Capacity Calculator Estimate Wi-Fi AP count from floor area, concurrent clients, traffic demand, AP class, utilization, and growth reserve with driver warnings.
Window Cleaning Quote Calculator Price a window cleaning job from pane count, access, add-ons, labor cost, margin floor, and warnings for restoration or specialty access.
Window U-value Calculator Compare current and proposed whole-window U-values, estimate conductive heat-flow savings, and flag target, SHGC, and label limits.
Wire Gauge Calculator Size an AWG conductor from current, one-way run length, voltage drop, material, temperature column, and ampacity margin with a gauge ledger.
WireGuard Config Generator Generate WireGuard server and client configs with peer route checks, topology preview, placeholder-key warnings, and review exports.
Word Counter Measure drafts or TXT files in your browser with word totals, readability scores, phrase repeats, frequency charts, and exportable reports.
Word Scramble Generator Create printable word scramble worksheets from word-and-hint lists, with repeatable seeds, difficulty controls, answer keys, and source-list checks.
Word Search Generator Generate a word search puzzle from A-Z word lists, with repeatable seeded layouts, direction controls, play mode, answer keys, and placement reports.
Work and Power Calculator Calculate mechanical work and average power from force, distance, angle, and time, with sign checks, unit conversions, and a force-angle curve.
Workout Rounds Tracker Track AMRAP, for-time, and interval workout rounds with rep totals, pace drift, RPE strain flags, short-row audits, and local history.
Workout Volume Calculator Calculate workout volume from pasted sets, reps, loads, RPE, and bodyweight rows, then compare tonnage, density, and weekly hard-set targets.
World Health Organization Quality of Life (WHOQOL-BREF) Assess WHOQOL-BREF quality of life across four domains, compare 0-100 scores, and review lower items, support anchors, and shareable results.
XLSX to CSV Converter Convert one Excel workbook sheet to CSV in your browser, choose delimiters and formula handling, and catch hidden-data or size warnings.
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 ledgers.
XPath Tester Test XPath against XML or HTML in your browser, verify namespace mappings and scalar results, and copy node ledgers or runtime snippets.
YAML Converter Convert YAML into JSON, normalized YAML, env, INI, and properties text with local parsing, document checks, path review, and schema output.
YAML Formatter Format YAML in your browser with parse warnings, path rows, change deltas, and JSON output before replacing configuration text.
YAML Validator Check YAML text or files in your browser, find parser errors and duplicate-key risks, then inspect document counts, paths, and parsed JSON.
ZFS Capacity Calculator Plan ZFS usable capacity from vdev layout, disk size, RAID-Z padding, slop, reserves, and target-fit paths before buying drives.
cURL Command Generator Build a paste-ready curl command for API requests, with shell-aware quoting, auth and body options, import parsing, and safety warnings.
chmod Calculator Build chmod modes and shell commands from octal or symbolic permissions, compare baselines, and catch recursive, world-write, and special-bit risks.
dnsmasq DHCP Config Generator Generate a dnsmasq DHCP scope config with pool checks, router and DNS options, static reservations, PXE/TFTP lines, and audit exports.
iptables Rule Generator Build iptables or ip6tables commands with CIDR, port, chain, backend, persistence, and production-review checks before firewall changes.
npm Audit Summary Analyzer Turn npm audit JSON or CI text into a release gate, severity ledger, fix-pressure queue, charts, and remediation handoff notes.
systemd Unit Generator Draft a systemd service unit from command, account, restart, dependency, and hardening choices with directive notes and host install checks.

Simplified Tools

Tools

Tags