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Password Strength Checker
Analyze entropy, strength, and improvement tips.
Random Name Generator
Names for startups, games, characters, and brands.
Text Case Converter
UPPER, lower, Title, camelCase, snake_case and more.
UUID / Token Generator
Cryptographically random UUIDs and API tokens.
QR Code Generator
Turn any URL or text into a scannable QR code.
JSON Formatter & Validator
Format, validate, and identify JSON errors.
CSV → JSON Converter
Convert CSV to JSON with custom delimiters.
Unit Converter
Length, weight, temperature, volume, speed, and more.
Time Zone Converter
Convert times between any two time zones.
Age Calculator
Exact age in years, months, days + birthday countdown.
Color Converter
Convert HEX colors to RGB and HSL.
HTML Entity Encoder
Escape HTML or decode entities back to text.
Lorem Ipsum Generator
Generate placeholder text.
Stopwatch & Timer
Track elapsed time and countdowns.
BMI Calculator
Calculate body mass index.
Aspect Ratio Calculator
Resize while preserving ratio.
Random Number Generator
Generate numbers within a range.
Dice Roller
Roll dice notation like 2d6.
Text Reverser
Reverse characters, words, or lines.
List Sorter & Deduper
Sort and dedupe line lists.
Roman Numeral Converter
Convert numbers and Roman numerals.
Email Signature Generator
Build a professional HTML email signature for Gmail and Outlook.
Loan / EMI Calculator
Monthly payment, total interest, amortization schedule.
Rent vs Buy Calculator
Compare 10–30 year total cost of renting vs buying.
Credit Card Interest Calculator
Payoff time and total interest on your balance.
Net Worth Tracker
Calculate current net worth from assets and liabilities.
Compound Interest Visualizer
See how investments grow over time with compound returns.
Crypto Profit Calculator
Gains, losses, ROI, and after-tax profit on any coin.
Stock Position Size Calculator
Ideal share count based on account size and stop-loss.
Tax Estimator
Federal income tax for USA or Canada with bracket breakdown.
Mortgage Calculator
Monthly payments, total interest, and extra payment savings.
Canada Mortgage Calculator
CMHC insurance, stress test, and land transfer tax.
Crypto Break-Even Calculator
Exact price needed to break even after fees and slippage.
Position Size Calculator
Risk-based sizing using account size, risk %, and stop-loss.
DCA Calculator
Model dollar-cost averaging with portfolio value chart.
Liquidation Price Calculator
Leveraged position liquidation price for longs and shorts.
Crypto Fee Estimator
Gas fees across ETH, BTC, Arbitrum, Polygon, Solana.
Savings Goal Calculator
Monthly savings needed for a target.
Inflation Calculator
Estimate purchasing power over time.
Salary to Hourly Calculator
Convert salary to hourly and monthly pay.
Tip & Bill Split Calculator
Tip, total, and per-person split.
Discount Calculator
Calculate sale prices, savings, and percent off.
Sales Tax Calculator
Add or reverse sales tax from a total.
Pay Raise Calculator
Estimate new pay after a raise or percent increase.
Budget Percent Calculator
Break income into category percentages.
Currency Fee Calculator
Estimate exchange spreads and conversion fees.
Currency Converter
Convert currencies, compare popular rates, and view a forex chart.
Live Currency Converter
Convert currencies with daily reference rates.
Live Crypto Price Lookup
Fetch crypto prices, 24h change, and market cap.
Historical Currency Rate Lookup
Convert using historical daily exchange rates.
Currency Trend API Tool
Fetch exchange-rate movement over time.
CoinCap Asset Lookup
Crypto rank, price, supply, and 24h change.
CoinCap Rates Lookup
Exchange rates for fiat and crypto assets.
Multi-Currency Rate Table
Latest exchange rates for many targets.
Crypto Trending Coins
Trending coins, symbols, ranks, and scores.
Compound Interest Calculator
Advanced compounding with currency, rate period, active days, and partial reinvestment.
Overtime Calculator
Regular pay, overtime pay, gross and net earnings by pay period.
Savings Calculator
Project savings growth with contributions, compound interest, and inflation.
How Long Will It Take to Save?
Find out when you'll hit your savings goal.
Loan Calculator
Payment, total interest, APR, extra payments, and amortization schedule.
Invoice Generator
Create professional invoices with line items, taxes, and PDF download.
4-Exchange Price Comparator
Live prices from Binance, Kraken, CoinPaprika & CoinGecko — one chart, spread analysis.
Crypto Price Comparison
Compare live prices and 24h changes.
Crypto Market Screener
Rank coins by market cap.
Crypto Coin Profile
Metadata, links, supply, and community stats.
Crypto Market Chart Analyzer
Historical returns and volatility.
Crypto OHLC Candle Viewer
Recent CoinGecko candles.
Crypto Trending Coins
Trending CoinGecko assets.
Global Crypto Market Dashboard
Market cap, volume, dominance.
Crypto Category Rankings
Market cap by category.
Crypto Exchange Rankings
Trust scores and volume.
Exchange Ticker Inspector
Trading pairs by exchange.
NFT Collection Lookup
NFT identifiers and symbols.
DeFi Global Market Dashboard
DeFi cap and dominance.
CoinPaprika Tickers Dashboard
Rank live crypto tickers.
CoinPaprika Coin Profile
Coin metadata and team links.
CoinPaprika Global Market
Global market cap and volume.
CoinPaprika Exchanges
Exchange volume and markets.
Binance 24h Ticker Inspector
24h high, low, volume, trades.
Binance Order Book Snapshot
Top bids and asks.
Binance Candle Analyzer
Candlestick return and range.
Kraken Market Snapshot
Ticker and OHLC snapshot.
Stock Quote Snapshot
Latest OHLCV quote.
Stock Price History Table
Recent daily history.
Stock Return Calculator
Total and annualized return.
Moving Average Signal Tool
SMA 20, 50, and 200.
Stock RSI Calculator
14-day RSI signal.
Stock MACD Calculator
12/26 EMA momentum.
Bollinger Bands Calculator
20-day bands and position.
Stock Volatility Calculator
Daily and annualized volatility.
Stock Max Drawdown Tool
Worst peak-to-trough loss.
Volume Spike Detector
Latest volume vs average.
Stock Gap Detector
Largest opening gaps.
Support & Resistance Finder
Recent range extremes.
Stock Correlation Tool
Correlation between two stocks.
Stock Beta vs SPY
Estimate benchmark beta.
Monthly Returns Table
Rough monthly performance.
Rolling High Low Tool
52-week high/low position.
Candlestick Pattern Scanner
Simple candle pattern checks.
Average True Range Calculator
ATR and daily range estimate.
Stock Trend Score
Score moving-average trend.
Stock Risk Reward Calculator
Entry, stop, target ratio.
Forex Rate Lookup
Latest daily pair rate.
Forex Currency Converter
Convert amount between currencies.
Forex Rate Table
One base into many quotes.
Forex Currency Matrix
Cross-rate matrix for codes.
Historical Forex Rate
Pair rate on a specific date.
Forex Time Series Analyzer
Range return, high, low.
Forex Volatility Calculator
Daily and annualized volatility.
Currency Info Lookup
ISO metadata and coverage.
Gold Price Snapshot
Gold per troy ounce.
Silver Price Snapshot
Silver per troy ounce.
Gold Silver Ratio
XAU/XAG ratio by currency.
Precious Metals Rate Table
Gold, silver, platinum, palladium.
Metal Value Converter
Ounces into currency value.
Historical Metal Rate
Historical gold or silver rate.
WTI Crude Oil Quote
WTI quote plus chart.
Brent Crude Oil Chart
Brent crude TradingView chart.
Airport METAR Weather
Current aviation weather observations.
Airport TAF Forecast
Terminal forecast details.
Airport Flight Rules Checker
VFR, MVFR, IFR, or LIFR.
Airport Weather Delay Risk
Weather-based disruption estimate.
Airport Crosswind Tool
Live wind vs runway heading.
Airport Station Info
Coordinates and identifiers.
Nearby Aircraft Scanner
Live ADS-B near an airport.
Aircraft ICAO24 Tracker
Track one aircraft address.
Airspace Density Scanner
Aircraft count by airport area.
Aircraft Flight History
Historical OpenSky flight rows.
City Travel Weather
Seven-day destination weather.
Trip Weather Compare
Compare two destinations.
Travel Air Quality Check
AQI and particulates.
Destination UV Index
Seven-day UV exposure.
Sunrise Sunset Travel Planner
Golden-hour timing.
Packing Weather Checklist
Forecast-based packing hints.
Best Travel Weather Window
Best days in the forecast.
Flight Scanner Link Builder
Google Flights, Kayak, Skyscanner.
Flight Status Link Builder
Public status tracker links.
Airport Map & Tracker Links
Airport map and tracker shortcuts.
IP Address Lookup
Geo location, ISP, and VPN/proxy detection for any IP.
Email Header Analyzer
Trace email delivery path and check SPF/DKIM auth.
Domain WHOIS Lookup
Registrar, registration dates, and nameservers.
Website Tech Detector
Detect CMS, frameworks, analytics, and CDNs.
Phone Number Validator
Validate phone numbers by country with format detection.
Username Availability Checker
Format rules and quick-links across 12 platforms.
Email Validator
Validate syntax, detect disposable providers and typos.
DNS Lookup Tool
Query A, MX, TXT, CNAME, NS records via Cloudflare DoH.
URL Redirect Checker
Detect shorteners, tracking params, and redirect chains.
User-Agent Parser
Decode browser, OS, architecture, and bot detection.
SSL Certificate Checker
SSL grade, expiry, HSTS, and forward secrecy via SSL Labs.
CSV Cleaner
Remove duplicates, nulls, empty rows, and messy whitespace.
Quick Data Profiler
Upload data and get stats, missing values, and quality signals.
Correlation Calculator
Pearson correlation, R-squared, and regression line.
Trend Change Detector
Find jumps and drops in time series data.
Outlier Detector
Detect unusual numeric values using IQR or z-score.
Percentile Calculator
Median, quartiles, and custom percentiles.
Sample Size Calculator
Estimate survey sample size.
A/B Test Calculator
Compare conversion rates and p-value.
CSV Column Extractor
Extract CSV columns by name or index.
Number Normalizer
Clean messy numeric values.
Duplicate Finder
Find repeated lines and values.
Train/Test Splitter
Randomly split rows into sets.
Pivot Counter
Count CSV rows by column.
Missing Value Counter
Count blanks and nulls by column.
TSV ↔ CSV Converter
Convert tab-separated data to CSV and back.
JSONL Formatter
Validate and pretty-print newline JSON records.
Data Type Detector
Infer column types from pasted data.
Z-Score Calculator
Calculate standard scores from values.
Frequency Table Generator
Count values and percentages in a list.
Random Sampler
Pick a random subset from rows or lists.
Weather Forecast API Tool
Live 7-day forecast by city.
Air Quality Index Lookup
Live AQI, PM2.5, PM10, and ozone readings.
Geocode Lookup Tool
Turn place names into coordinates.
Elevation Lookup Tool
Find elevation for places or coordinates.
Country Intelligence Lookup
Population, currencies, languages, and capitals.
Postal Code Lookup
Resolve postal codes to places and coordinates.
ISBN Book Lookup
Fetch book metadata from an ISBN.
Academic Paper Finder
Search scholarly works and citation counts.
Hacker News Trend Search
Compare HN stories by points and comments.
IP Enrichment Lookup
Location, ASN, organization, and timezone.
Public Holiday Lookup
Official holidays by country and year.
Long Weekend Finder
Find long weekends and bridge days.
World Bank Indicator Lookup
Recent country indicator values.
World Bank Country Profile
Region, income level, capital, and coordinates.
Marine Forecast API Tool
Wave height, direction, and sea temperature.
Sunrise & Sunset API Tool
Sunrise, sunset, and daylight duration.
Timezone Lookup API Tool
Timezone, UTC offset, and local API time.
University Finder API Tool
Search universities by country.
Food Barcode Lookup
Product name, ingredients, and nutrition grade.
Wikidata Entity Lookup
Entity IDs, descriptions, and concept URLs.
Clinical Trials Search
Search studies by condition, treatment, or keyword.
Drug Label Lookup
FDA labeling, warnings, dosage, and ingredients.
Drug Recall Search
Search FDA drug enforcement reports.
Medical Device Recall Search
FDA device recall reports by device or firm.
Food Recall Search
Search FDA food enforcement reports.
GBIF Species Lookup
Scientific names and taxonomy records.
GBIF Occurrence Search
Recent biodiversity occurrence records.
Global News Monitor
Search recent global news coverage.
SpaceX Launch Explorer
Recent launches, dates, status, and links.
SpaceX Rocket Lookup
Rocket height, mass, engines, and first flight.
Name Demographics Analyzer
Estimate age, gender, and nationality.
USGS Earthquake Monitor
Recent earthquake feeds by magnitude.
USGS Water Site Lookup
Stream gauge metadata and discharge.
UK Carbon Intensity Lookup
Grid carbon intensity and generation mix.
Open Brewery Search
Search breweries, cideries, and brewpubs.
TV Show Metadata Lookup
Ratings, status, network, genres, and summaries.
TV Schedule Lookup
Episodes airing by country and date.
Pokemon Data Explorer
Stats, types, abilities, moves, and weight.
Joke Search API Tool
Search public joke content by keyword.
Random User Data Generator
Synthetic user records for demos and tests.
Word Counter + Readability
Count words, sentences, and get readability scores.
Headline Generator
Click-worthy headlines using proven copywriting formulas.
Meta Description Generator
Write compelling meta descriptions with SEO length checks.
Keyword Density Checker
Analyze keyword frequency and optimal SEO density.
Plagiarism / Similarity Checker
Compare two texts for similarity and duplicate sentences.
AI Prompt Formatter
Build structured prompts for ChatGPT, Claude, Gemini.
Text Summarizer
Extractive summarization — finds the most important sentences.
Keyword Difficulty Estimator
Estimate competition level using structural heuristics.
Title Length & CTR Optimizer
Score your title for CTR signals with platform previews.
Slug Generator
Convert any text into clean, SEO-friendly URL slugs.
Internal Link Suggestion Tool
Keyword-matched internal link opportunities from your pages.
Readability Grade Calculator
Flesch, F-K, Fog, Coleman-Liau, and SMOG scores.
AI Text Tone Detector
Detect formal, casual, confident, and urgent tone signals.
Rewrite Tool
Shorten, expand, simplify, or polish text.
Bullet Point Generator
Turn paragraphs into concise bullet points.
FAQ Generator
Generate SEO-friendly FAQs from source content.
Content Gap Finder
Compare two texts and find missing topics.
Hashtag Generator
Turn topics into social hashtags.
Blog Outline Generator
Create outlines from topics and keywords.
Passive Voice Detector
Highlight likely passive voice phrases.
Email Subject Line Tester
Score subject lines for clarity and risk.
Social Post Length Checker
Check common platform limits.
Acronym Generator
Turn phrases into acronym ideas.
Meeting Agenda Generator
Create timed meeting agendas.
Text to Table Converter
Convert delimited text to Markdown tables.
Sentence Case Converter
Convert text into clean sentence case.
Text Diff Checker
Compare two text blocks line by line.
Reading Time Calculator
Estimate reading and speaking time.
CTA Generator
Generate call-to-action copy ideas.
Paragraph Splitter
Split long text into readable paragraphs.
Dictionary Definition Lookup
Definitions, phonetics, examples, and parts of speech.
Rhyme & Synonym Finder
Find rhymes, synonyms, and related words.
Wikipedia Summary Finder
Fetch concise encyclopedia summaries.
DOI Metadata Lookup
Title, publisher, journal, authors, and date.
Open Library Book Search
Search books by title, author, ISBN, or keyword.
Word Relations Explorer
Synonyms, antonyms, and related words.
arXiv Paper Search
Search papers, authors, dates, and summaries.
Anime Metadata Search
Score, episodes, year, status, and synopsis.
Project Gutenberg Metadata Search
Public-domain ebook metadata and subjects.
Quote Search Tool
Search quotes by tag, author, or keyword.
Language Detection API Tool
Detect likely language codes for text.
Urban Dictionary Lookup
Slang definitions, examples, and votes.
Spin-the-Wheel Decision Maker
Add options, spin the wheel, let fate decide.
Name Picker Wheel
Paste a list and spin to randomly pick a name.
What Should I Eat?
Set your mood and get a random food suggestion.
Anagram / Word Unscrambler
Unscramble letters or check if two phrases are anagrams.
Name Compatibility Calculator
Discover compatibility score for two names. Just for fun!
Fake Tweet Generator
Create a realistic tweet card for memes and presentations.
Meme Caption Maker
Pick a classic meme template and add your own captions.
Cooking Unit Converter
Convert cups, tbsp, grams, oz, and ml for 24 common ingredients.
Stopwatch with Checkpoints
Full-featured stopwatch with unlimited lap checkpoints and CSV export.
10 Countdown Timers
Run 10 simultaneous countdown timers with audio chime and page flash at zero.
Time Zone Converter
Convert times between world time zones with an interactive map.
What Time Is It In...
Live local time in any city worldwide — search and add clocks.
Date Difference Calculator
Days, business days, weeks, months, and years between two dates.
Business Day Calculator
Add or subtract business days with US, UK, CA, and AU holiday support.
Unix Timestamp Converter
Live epoch counter, bidirectional conversion, and relative time display.
Regex Tester
Test regular expressions with match highlighting and groups.
JWT Decoder
Decode JSON Web Tokens — header, payload, expiry check.
Base64 Encoder / Decoder
Encode or decode Base64, URL encoding, HTML entities.
HTML to Markdown Converter
Convert HTML snippets into clean Markdown.
JavaScript Minifier
Compress JavaScript with Terser and copy output.
HTTP Request Builder
Build HTTP requests and generate cURL / fetch() code.
API Response Formatter
Paste JSON or XML and get syntax-highlighted output.
cURL → Code Converter
Convert cURL commands to Python, JavaScript, PHP, or Go.
SQL Query Formatter
Format and beautify SQL with syntax highlighting.
Log File Analyzer
Paste logs to count by level, filter, and highlight errors.
Log File Formatter
Convert raw logs to JSON, CSV, or table output.
JSON Diff Tool
Compare JSON objects and highlight changes.
Cron Expression Generator
Convert human schedules to cron and back.
Timestamp Converter
Convert Unix timestamps to human dates.
API Latency Tester
Measure endpoint response times with fetch probes.
YAML to JSON Converter
Convert simple YAML and JSON configs.
URL Parser & Query Builder
Edit query params and rebuild URLs.
HTTP Status Code Lookup
Search common HTTP response codes.
.env Parser & Validator
Clean env files and spot duplicates.
Markdown Previewer
Preview rendered Markdown instantly.
UUID Validator
Validate UUIDs and detect version.
JSON Schema Starter
Generate schema from sample JSON.
CSS Clamp Calculator
Create fluid clamp() values.
Docker Run Builder
Build docker run commands.
HTML Minifier
Compress HTML markup and remove extra whitespace.
CSS Minifier
Minify CSS rules for quick cleanup.
JS Object to JSON Converter
Convert simple JavaScript object literals to JSON.
Regex Escape Tool
Escape text for safe regular expression matching.
MIME Type Lookup
Find common MIME types by extension.
HTTP Header Parser
Parse raw request or response headers.
GitHub Repo Analyzer
Stars, forks, issues, license, and freshness.
GitHub User Analyzer
Profile, followers, repos, and account age.
npm Package Lookup
Version, license, maintainers, and publish date.
PyPI Package Lookup
Python package metadata and classifiers.
CDNJS Library Finder
Search libraries and latest CDN URLs.
Stack Overflow Question Search
Search questions by relevance, answers, and score.
GitHub Repository Search
Search repos by stars, forks, and language.
GitHub Issue Search
Search public GitHub issues.
npm Download Stats Lookup
Last-week download volume for npm packages.
Packagist Package Lookup
Composer versions, requirements, and licenses.
GitLab Project Search
Search public GitLab projects.
Docker Hub Image Search
Search images by pulls, stars, and descriptions.
Maven Artifact Search
Search Maven Central artifacts.
Homebrew Formula Lookup
Versions, license, dependencies, and homepage.
Crates.io Package Lookup
Rust crate downloads, version, and license.
RubyGems Package Lookup
Gem version, downloads, licenses, and authors.
WordPress Plugin Lookup
Plugin ratings, installs, and versions.
WordPress Theme Lookup
Theme ratings, versions, authors, and previews.
jsDelivr Package Stats
npm CDN package metadata and versions.
Deno Package Search
Search Deno packages and modules.
OpenGraph Image Generator
Design and download a 1200×630 OG image for social sharing.
robots.txt Builder
Build a robots.txt with bot rules, crawl delay, and sitemap URL.
Status Banner Widget
Generate a dismissible site banner — embed via one script tag.
Cookie Consent Widget
GDPR-friendly cookie consent popup — embed via one script tag.
Feedback Widget
Floating feedback button with form — embed via one script tag.
Changelog Widget
"What's New" changelog with unread badge — embed via one script tag.
Password Leak Checker
Check breach exposure via HaveIBeenPwned.
Hash Generator
Generate MD5, SHA-1, SHA-256, and SHA-512 hashes.
File Checksum Tool
Compute file checksums locally in your browser.
JWT Expiry Checker
Decode tokens and check expiry status.
Open Port Checker
Probe web-style ports for reachability hints.
Secure Password Generator
Generate strong random passwords locally.
CSP Builder
Generate a starter CSP header.
Security Headers Analyzer
Check pasted headers for common protections.
robots.txt Generator
Create crawler rules and sitemap references.
Basic Auth Header Generator
Generate HTTP Basic authorization headers.
CHMOD Calculator
Convert Linux permissions between symbolic and octal.
CIDR Calculator
Calculate subnet ranges, masks, and host counts.
Influencer Engagement Calculator
True engagement rate and sponsored post value.
Amazon Product Margin Calc
Real FBA/FBM profit margin after fees, COGS, and ads.
Newsletter ROI Calculator
Email newsletter ROI with growth simulation.
YouTube Title Optimizer
Score YouTube titles against proven CTR factors.
Text Sentiment Analyzer
Analyze emotional tone of reviews and social posts.
Content Credibility Checker
Detect sensationalism and credibility red flags.
Trends Comparator
Visualize interest trends from Google Trends CSV exports.
Fake News Detector
Score headlines for sensationalism and clickbait patterns.
Bias Detector
Detect left, right, or neutral political slant in text.
Source Reputation Checker
Check a domain against reputable and flagged source lists.
Article Similarity Checker
Detect duplicated or syndicated content between two articles.
Entity Extractor
Extract people, organizations, and locations from any text.
Image Compressor
Reduce JPEG, PNG, WebP file sizes with quality slider. 100% client-side.
Background Remover
Remove simple backgrounds and export transparent PNG.
GIF Compressor
Resize and recompress GIFs with fallback export.
PDF Merger
Combine multiple PDFs into one document. No server upload.
PDF Splitter
Extract specific page ranges from a PDF file.
PDF Page Delete & Reorder
Remove and reorder PDF pages locally.
Favicon Generator
Generate 16/32/180/192/512px favicon set plus web manifest.
EXIF Metadata Viewer
View or strip camera, GPS, and timestamp data from photos.
Color Palette Extractor
Extract dominant colors from any image as HEX and RGB.
Depth of Field Calculator
Near/far focus limits and hyperfocal distance for any lens and sensor.
BMI Calculator
Body Mass Index with metric/imperial and WHO category display.
TDEE & BMR Calculator
Daily calorie burn from age, weight, height, and activity level.
Macro Calculator
Protein, carbs, fat targets from calorie goal and fitness objective.
Sleep Cycle Calculator
Optimal bedtimes based on 90-minute sleep cycles.
Pregnancy Due Date
Due date from LMP or conception date with trimester timeline.
Google SERP Preview
Preview title and meta description in Google search with pixel-width validation.
Domain Name Generator
Generate brandable domain ideas from keywords.
Open Graph Card Preview
Live Facebook and Twitter card mockups from your OG tags.
Schema.org JSON-LD Generator
Build Article, Product, FAQ, LocalBusiness structured data.
Privacy Policy Generator
Generate a complete privacy policy for your website or app in seconds.
Terms of Use Generator
Create a terms of service document tailored to your site type and jurisdiction.
Sitemap.xml Generator
Paste URLs and download a valid XML sitemap ready for Google Search Console.
Broken Link Checker
Paste HTML or URL list to find broken and unreachable links on your pages.
Running Pace Calculator
Convert pace, speed, and finish time. Race table and pace zones included.
CSS Gradient Generator
Visual linear/radial/conic gradient builder with copy CSS output.
CSS Box Shadow Generator
Multi-layer shadow builder with live preview.
WCAG Contrast Checker
AA/AAA pass-fail for foreground/background color pairs.
JSON ↔ CSV Converter
Bidirectional converter with nested object flattening.
YAML ↔ JSON Converter
Convert YAML and JSON bidirectionally. Kubernetes and Docker ready.
Cron Expression Builder
Visual cron builder with next 5 run times preview.
Cron Syntax Reference
Complete cron field guide with 20 ready-to-copy patterns.
HTTP Status Code Lookup
Searchable 1xx–5xx reference with plain-English explanations.
User-Agent Parser
Detect browser, OS, and device from any UA string.
Text Diff / Compare
Side-by-side colored diff of two texts.
URL Encoder / Decoder
Encode or decode URLs with component breakdown and batch mode.
HTML Entity Encoder / Decoder
Encode HTML special characters or decode entities back to text.
CIDR Subnet Calculator
Network, broadcast, usable range, host count, and IP class from CIDR.
Mock Data Generator
Realistic test data with names, emails, phones, and Luhn-valid cards.
CSS Grid Generator
Visual CSS grid builder with column/row templates and live preview.
CSS Flexbox Playground
Toggle all flex container properties and see the live layout instantly.
Cubic Bézier Editor
Design CSS easing curves with drag handles, animation preview, and presets.
Barcode Generator
CODE128, EAN-13, UPC-A, CODE39, ITF-14 — download SVG or PNG.
Tip & Bill Splitter
Split restaurant bills with tip. Even or per-person split.
Retirement Calculator
401k/IRA projection with employer match and compound growth.
Inflation Calculator
Historical purchasing power using US CPI data from 1913–2025.
Metronome
Accurate Web Audio metronome with tap tempo and visual beat dots.
BPM Tap Counter
Tap to detect BPM with weighted average and confidence level.
Instrument Tuner
Microphone pitch detection with cents needle. Guitar, violin, bass presets.
Tone Generator
Generate pure tones 20–20kHz with sine, square, sawtooth, triangle waveforms.
Noise Generator
White, pink, and brown noise for focus, sleep, and ambient sound.
Statistics Calculator
17 stats including mean, median, mode, std dev, and frequency histogram.
Number to Words Converter
Convert numbers to written English, up to 999 quadrillion. Cheque format included.
Prime Factorizer
Factor any number with exponent notation. Scan a range for all primes.
Triangle Solver
Solve SSS, SAS, ASA, AAS, SSA triangles with SVG diagram and area.
Resistor Color Band Calculator
Bidirectional: bands → ohms or ohms → bands. SVG resistor drawing.
Ohm's Law Calculator
Solve for voltage, current, resistance, or power. Supports mV, mA, kΩ, mW units.
Typing Speed Test
Measure WPM and accuracy with live character highlighting. 30/60/120s modes.
Reaction Time Test
5-trial reflex test with bar chart and ms classification.
Connection Speed Test
Estimate download speed via fetch timing with a visual speed gauge.
Pomodoro Timer + Tasks
25/5 focus cycles with audio chime and local-storage task list.
Morse Code Translator
Text to Morse and back with Web Audio playback.
Sunrise & Sunset Calculator
Golden hour, civil/nautical/astronomical twilight by location and date.
Moon Phase Calculator
Current illumination, phase name, and next full/new moon dates.
ISS Live Tracker
Real-time ISS position on an interactive map with trail history.
Your Weight on Other Planets
See your weight on all 8 planets, Moon, and Pluto.
D&D Character Generator
Random stats (4d6-drop-lowest), race, class, name, and backstory.
Initiative Tracker
Manage turn order, HP bars, and conditions for tabletop RPGs.
Chess Clock
Fischer, Bronstein, delay, and simple modes. Space bar to switch.
GPS Coordinate Converter
Convert between DD, DMS, and DDM formats. Geolocation button included.
Antipode Finder
Find the exact opposite point on Earth with dual interactive maps.
Map Distance Measurer
Click points on a map to measure distance in km or miles.
GPA Calculator
Unweighted 4.0, weighted 5.0 (AP/Honors), and percentage GPA modes.
Final Grade Needed Calculator
Find the exam score you need to hit your target grade.
Online Sketchpad
Freehand drawing with pen, shapes, and eraser. Export as PNG.
Pixel Art Editor
Draw, fill, and export pixel art at 16× scale. 8/16/32/64px grids.
Image Resizer
Resize by pixels or percentage with aspect ratio lock. 100% client-side.
Image → ASCII Art
Convert images to ASCII with color or monochrome output and density control.
Video → GIF Converter
Extract video frames and download as ZIP or preview as animation.
Audio Trimmer
Visually trim audio files with waveform preview. Download the clipped result.
Online Notepad
Multi-tab notepad with autosave, find & replace, and word count.
Eisenhower Matrix
Prioritize tasks across 4 urgency/importance quadrants. Export as PNG.
Weighted Decision Matrix
Score options against weighted criteria and rank by total score.
Heart Rate Training Zones
5 training zones via Karvonen formula. Enter age and resting heart rate.
Ideal Weight Calculator
Compare Devine, Robinson, Miller, and Hamwi formulas side by side.
Caesar Cipher / ROT13 / Atbash
Encode and decode Caesar, ROT13, Atbash, and Vigenère ciphers.
Hash Identifier
Identify hash types by length and pattern. Generate MD5/SHA hashes.
Color Blindness Simulator
Preview images as seen with protanopia, deuteranopia, tritanopia, or achromatopsia.
Title Case Converter
AP, Chicago, MLA, APA, sentence case, ALL CAPS, and lowercase.
Fancy Unicode Text Generator
14 Unicode styles: bold, italic, script, fraktur, small caps, and more.
Citation Generator
APA, MLA, Chicago, Harvard from DOI, ISBN, or manual entry.
Percentage Calculator
What is X% of Y? X is what % of Y? Percentage change — all three modes.
Scientific Calculator
sin/cos/tan/log/ln/√/exp with keyboard support and memory functions.
Fraction Calculator
Add, subtract, multiply, divide fractions. Simplify and convert to decimal.
Discount Calculator
30% off $89.99 is what? Find sale price, savings, or original price.
Time Card Calculator
Clock-in/out with breaks → total hours, overtime, and gross pay.
Hours Between Times
From 9:15 AM to 3:45 PM is how many hours? Handles overnight spans.
Time Zone Meeting Planner
Pick cities and a date — see a 24-hour overlap grid with business-hours highlighting.
Image Format Converter
Convert JPG, PNG, WebP between formats with quality control. Batch supported.
Image to Text (OCR)
Extract text from images using Tesseract.js. Supports 9 languages.
Image Crop, Rotate & Flip
Drag to crop, rotate 90°/180°, flip horizontal or vertical. Export PNG or JPEG.
PDF ↔ Word Converter
Extract PDF text to .docx, or convert Word documents to PDF. All client-side.
PDF Compressor
Reduce PDF file size with light, medium, or aggressive compression. No upload.
PDF Password Tool
Add or remove PDF password protection entirely in your browser.
Text to Speech
Browser-native TTS with voice selection, rate, pitch, and volume controls.
Speech to Text
Dictate text via microphone. 13 languages, continuous mode, interim results.
Voice Recorder
Record audio with live waveform, pause/resume, and download as WAV or WebM.
Text Manipulation Toolkit
Sort, deduplicate, case-convert, extract emails/URLs, find & replace, 25+ operations.
Online Translator
Translate between 21 languages with auto-detect and swap. Powered by MyMemory.
Reading & Speech Time Estimator
Get reading time at 3 WPM presets plus speaking time for presentations.
ATS Resume Checker
Score your resume for ATS compatibility — sections, keywords, formatting, action verbs.
Visa Requirement Checker
Entry checklist with official visa and passport verification links.
Travel Vaccination Requirements
Destination health checklist with CDC and IATA source links.
Trip Cost Estimator
Flights, lodging, meals, transit, activities, insurance, and buffer.
Flight Connection Time Checker
Layover risk for terminals, bags, immigration, and self-transfers.
Train Schedule Finder
Build rail timetable searches for major operators and route planners.
Travel Insurance Needs Calculator
Medical, cancellation, baggage, evacuation, and rental car coverage.
Best Route Airport Finder
Compare nearby airports by drive time, route depth, and convenience.
Mortgage Affordability & Refinance Analyzer
Home affordability, DTI, cash to close, and refinance break-even.
Debt Payoff Planner
Snowball vs avalanche payoff order, interest, and debt-free date.
Car Loan vs Lease Calculator
Compare finance and lease costs with resale and mileage fees.
Insurance Coverage Calculator
Estimate life, property, auto, liability, and emergency coverage.
Sports Odds Calculator
Convert odds, implied probability, payouts, parlays, and hedges.
Workout Plan Generator
Weekly training plans by goal, equipment, schedule, and level.
Calorie & Macro Calculator
TDEE, calorie target, macros, and weekly weight-change estimate.
Event Countdown & Invite Builder
Countdown timer, invite copy, RSVP prompt, and calendar details.
AI Resume Tailor
Match a resume to a job post and generate targeted rewrite ideas.
Travel Itinerary Builder
Day-by-day trip plans with budget, pacing, and reminders.
Period & Ovulation Tracker
Track cycles, fertile windows, and pregnancy milestones. Stored locally only.
Sort & Dedupe Lines
Sort, deduplicate, trim, reverse, or shuffle lines. Natural + numeric sort.
Word Frequency Counter
Per-word counts with stopword filter and CSV export.
Word Cloud Generator
Custom colors and shapes (circle, heart, star, cloud). PNG download.
Quadratic & Cubic Solver
Roots (real & complex), discriminant, vertex, and step-by-step work.
Image → Base64 Data URL
Drag-and-drop to copy data: URL, <img>, CSS, or Markdown snippet.
TOTP / 2FA Code Generator
Live RFC 6238 codes from a Base32 secret or otpauth:// URI.
One-Rep Max Calculator
Epley, Brzycki, Lombardi, O'Conner, Wathen + 50–95% training table.
Interactive Periodic Table
Click any element for atomic mass, electron config, group, period, and more.