All 98 free tools

BMI Calculator Body Mass Index, metric & imperial BMR Calculator Calories burned at rest Body Fat Calculator US Navy method body fat estimate Calorie Calculator Daily calorie needs by activity level Due Date Calculator Pregnancy due date & week estimator Health Stats Suite BMI, TDEE & ideal weight in one tool Ideal Weight Healthy weight range for your height Pomodoro Timer Focus intervals with audio alerts Water Intake Daily hydration needs by weight

Annuity Mortgage Fixed payment with amortisation schedule Annuity vs Linear Side-by-side mortgage comparison Compound Interest Savings growth with compound returns Currency Converter Live exchange rates, 30+ currencies Discount Calculator Final price and savings after discount Early Payoff Calculator Extra payments save time and interest Linear Mortgage Fixed principal, decreasing monthly cost Loan Calculator Monthly payments and total interest Mortgage Calculator Monthly payments and total cost Percentage Calculator % of, what %, and % change Rent vs Buy Analyzer Net worth comparison over your horizon Salary Calculator Annual, monthly, weekly & hourly pay Tip Calculator Split bills and calculate tips VAT Calculator Add or remove VAT/sales tax instantly

Age Calculator Exact age and birthday countdown Business Day Calculator Working days with holiday exclusions Chess Timer Two-player clock with increment. Tap your side when your move is done Countdown Timer Count down to any date or event Date Difference Days, weeks, months between dates Days Until Countdown to Christmas, birthdays & more How Old in Days? Age in days, weeks, hours — live counter Interval Timer Interval Timer HIIT, Tabata and circuit training. Set work, rest, Multiple Timers Run several countdown timers at once. Name them, colour-coded urgency, Reaction Time Test Reaction Time Test Click the box the instant it turns green. 5 rou Stopwatch Precision stopwatch with lap times Timezone Converter Convert times between cities worldwide Weeks Until Christmas Live countdown to Christmas & any event What Day Was I Born? What Day Was I Born? Enter your birth date to reveal your birth da

Case Converter UPPER, lower, Title, camelCase & more Lorem Ipsum Generator Placeholder text by words or paragraphs Markdown Previewer Write Markdown, see live HTML preview Reading Time Estimator How long to read any text Text Diff Checker Compare two texts, highlight differences Word Counter Words, characters, sentences & reading time

Base64 Encode / Decode Base64 Encode / Decode Encode text to Base64 or decode Base64 stri Cron Expression Builder Cron Expression Builder Build cron schedules visually — see a plai CSV to Table CSV to Table Drop a CSV file or paste data below. Everything runs Hash Generator Hash Generator Generate MD5, SHA-1, SHA-256, and SHA-512 cryptogra HTML Minifier HTML Minifier Strip comments and collapse whitespace from HTML. Se HTML to Markdown HTML to Markdown Convert HTML snippets to clean Markdown. Headings Image to Base64 Image to Base64 Convert images to Base64 data URIs for embedding d JS & CSS Minifier JS & CSS Minifier Remove whitespace and comments from JavaScri JSON Formatter JSON Formatter Paste JSON to prettify or minify it. Validation err JSON to CSV JSON to CSV Paste a JSON array of objects, preview as a table, and JSON ↔ YAML JSON ↔ YAML Convert between JSON and YAML formats. Useful for Kube JWT Decoder JWT Decoder Decode any JWT token — view header, payload claims, an Password Generator Password Generator Generate strong, cryptographically secure passw PHP Unserializer PHP Unserializer Decode PHP serialized strings, JSON, and Base64-e Privacy Blur Privacy Blur Draw blur or black-box redactions over sensitive area QR Code Generator QR Code Generator Generate QR codes for URLs, plain text, email ad Regex Tester Regex Tester Write a pattern, test it against your text — matches SQL Formatter SQL Formatter Format messy SQL into readable, indented queries wit Timestamp Converter Timestamp Converter Convert Unix timestamps to readable dates — an URL Encoder / Decoder URL Encoder / Decoder Encode special characters for use in URLs, o URL Slug Generator URL Slug Generator Convert any title or text to a clean, URL-safe UUID Generator UUID Generator Generate cryptographically random UUID v4 identifie XML Formatter XML Formatter Pretty-print and validate XML with syntax highlighti

Aspect Ratio Calculator Scaled dimensions for images and video Decision Maker Random picker with weighted spin animation Fraction Calculator Add, subtract, multiply & divide fractions GPA Calculator GPA from grades and credit hours Number Base Converter Binary, Octal, Decimal, Hexadecimal Percentage Calculator % of, what %, and % change Random Number Generator Generate random numbers, roll dice, or flip a coin Roman Numeral Converter Numbers ↔ Roman numerals, 1–3,999 Scientific Calculator Trig, log, sqrt, factorial and more Standard Deviation Mean, variance & std dev from a dataset

Car Affordability How much car can you afford? 20/4/10 rule check Car Depreciation Year-by-year value loss with depreciation chart Car Loan Calculator Monthly payment & amortisation schedule Car Ownership Cost Total true cost of owning a car over 1–10 years EV Economy Tracker Wh/km, mi/kWh, range and charging cost EV vs Petrol TCO 5 & 10 year total ownership cost comparison Fuel Cost Calculator Annual, monthly & trip fuel spend Fuel Economy Converter MPG, L/100km and km/L with cost Parking Cost Calculator Daily, monthly & annual parking cost Road Trip Calculator Fuel cost & per-person split Tyre Size Calculator Decode & compare tyre markings

Clothes Size Converter US, UK, EU clothing sizes Color Converter Convert between HEX, RGB, HSL, and HSV. Live preview swatch updates as Cups to Grams Density-aware baking converter, 40+ ingredients Oven Temperature °C, °F, Gas Mark and Fan oven Recipe Scaler Scale any recipe up or down Screen Resolution Your viewport, pixel ratio & device info Shoe Size Converter US, UK, EU, JP shoe sizes Unit Converter Length, weight, temperature, speed & more

API Mock Generator JSON to TypeScript interface and mock data Tailwind Visualizer Visualise your Tailwind CSS config as a style guide Viewport Breakpoint Live CSS breakpoint display as you resize