All tools

Convert meters, feet, miles, inches and more — instantly.

Convert kg, lb, oz, stones and tonnes instantly.

Convert Celsius, Fahrenheit, Kelvin and Rankine.

Liters, gallons, cups, fl oz, pints and more.

km/h, mph, m/s, knots and feet per second.

Convert seconds, minutes, hours, days, weeks, years.

Convert degrees, radians, gradians and turns.

Hz, kHz, MHz, GHz, RPM and BPM.

Square meters, feet, acres, hectares and more.

Joules, kWh, calories, BTU, electronvolts.

Watts, kilowatts, horsepower, BTU/h.

Pascals, bar, psi, atmospheres, mmHg, torr.

Bytes, KB, MB, GB, TB, PB — decimal and binary.

Real-time exchange rates for 30+ world currencies — free.

Real-time Bitcoin, Ethereum and top coin prices.

Split bills and calculate tip per person.

Add or remove VAT, GST or sales tax — any rate.

Hourly to annual, monthly, weekly and daily.

Final price after a percentage off — instantly.

Monthly EMI, total interest and full repayment cost.

Monthly payment, taxes, insurance and total cost.

Future value with monthly contributions.

Today's purchasing power in tomorrow's prices.

Convert times between any two timezones.

Unix timestamps ↔ human-readable dates.

Exact age in years, months, days — and more.

Days, weeks, months between any two dates.

Count business days (Mon-Fri) between dates.

Decode cron expressions in plain English.

Live countdown to any future date — shareable.

Convert JSON to XML or XML to JSON — both directions.

Beautify, minify and validate JSON — free, no signup.

Turn CSV into JSON or JSON into CSV — both directions.

Convert YAML to JSON or JSON to YAML — both directions.

Beautify and indent ugly SQL queries.

Beautify, minify and validate XML — instantly.

Beautify and minify HTML — Prettier defaults.

Beautify and minify CSS stylesheets.

Prettier-formatted JS & TS, in the browser.

Normalise YAML indentation and structure.

Normalise markdown with Prettier.

Format GraphQL queries and schemas.

Parse JSON with comments and trailing commas.

Convert JSON arrays to Excel or Excel sheets to JSON.

Generate v4 UUIDs in bulk — cryptographically secure.

Turn any text into a URL-friendly slug.

Test JavaScript regular expressions live.

camelCase, snake_case, kebab-case and more.

Sort lines alphabetically, by length or numerically.

Dedupe lines while preserving original order.

Reverse characters, words or lines.

Bulk find and replace, with regex support.

Trim, collapse or strip whitespace from text.

Rewrite sentences in a different tone using AI.

Compare two blocks of text line by line.

Count words, characters, sentences, reading time.

Generate placeholder text — paragraphs, sentences or words.

Count characters with and without spaces.

Convert HTML to Markdown or Markdown to HTML — both directions.

Encode and decode Base64 — Unicode-safe.

Percent-encode and decode URLs safely.

Escape or unescape HTML special characters.

Convert between hex, binary, octal and decimal.

ROT13 and Caesar shift any letters.

Encode and decode international Morse code.

Decode and inspect JWT tokens — locally, never logged.

SHA-1, SHA-256, SHA-384, SHA-512 — all in browser.

HMAC-SHA1/256/384/512 with any secret.

Cryptographically secure random passwords.

Estimate entropy and get tips, locally.

Generate customisable QR codes or decode them from images.

HEX, RGB, HSL and modern OKLCH — instantly.

Check WCAG AA / AAA contrast — pass or fail.

Closest Tailwind class for any HEX color.

Drop an image, extract its palette.

Linear, radial and conic CSS gradients.

Visual CSS box-shadow editor.

Per-corner CSS border-radius editor.

Design CSS easing curves visually.

Convert px, rem, em, pt and more.

Compute ratios and resize dimensions.

Strip metadata and whitespace from SVG icons.

Convert PNG, JPG and WebP — in your browser.

Resize images to exact pixel dimensions.

Shrink image file size with one click.

Crop images by pixel coordinates.

Rotate 90/180/270° and flip images.

Remove GPS and camera metadata before sharing.

Render SVG markup to a high-resolution PNG.

Generate full favicon and PWA icon sets.

Combine multiple PDFs into one — privately.

Split a PDF by page ranges.

Render every PDF page to a PNG.

Extract selectable text from a PDF.

Convert CSV to .xlsx or Excel back to CSV — both directions.

Shrink PDF file size — in your browser.