Interactive Projects

Change text to UPPERCASE, lowercase, Title Case, camelCase, snake_case, and more.

Strip line breaks and join broken text into one clean block.

Sort lines alphabetically A to Z or Z to A, remove duplicates, and ignore case.

Turn a list with one item per line into a comma separated line, with optional quotes.

Convert any title into a clean, URL friendly slug with hyphens.

Repeat any word, line, or block of text as many times as you want.

Convert between mm, cm, m, km, inches, feet, yards, and miles.

Convert between grams, kilograms, ounces, pounds, stone, and tonnes.

Convert temperatures between Celsius, Fahrenheit, and Kelvin.

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

Convert between square meters, square feet, acres, hectares, and more.

Convert between milliliters, liters, cups, pints, quarts, and gallons.

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

Convert between bits, bytes, KB, MB, GB, and TB, decimal and binary.

Convert between pascals, bar, psi, atmospheres, and mmHg.

Convert between joules, calories, watt hours, kilowatt hours, and BTU.

Convert between watts, kilowatts, and horsepower.

Convert between hertz, kilohertz, megahertz, gigahertz, and RPM.

Convert between degrees, radians, gradians, and turns.

Convert between amperes, milliamperes, and kiloamperes.

Convert between volts, millivolts, microvolts, and kilovolts.

Convert a whole number into Roman numerals from 1 to 3999.

Convert Roman numerals back into an ordinary number.

Spell out any number in English words, including decimals.

Turn numbers written in English words back into digits.

Convert text to a Base64 string, with full UTF-8 and emoji support.

Convert a Base64 string back into readable text.

Percent encode text so it is safe to use in a URL or query string.

Turn percent encoded text back into readable characters.

Generate random version 4 UUIDs, one or thousands at a time.

Convert text into 8 bit binary code, one byte per character.

Decode 8 bit binary code back into readable text.

Convert text into hexadecimal character codes.

Decode hexadecimal character codes back into text.

Convert text into octal character codes.

Decode octal character codes back into text.

Convert text into decimal character codes.

Decode decimal character codes back into text.

Convert text into ASCII character codes.

Decode ASCII character codes back into text.

Convert ASCII text into 8 bit binary code.

Decode binary code back into ASCII text.

Convert binary numbers to decimal.

Convert decimal numbers to binary.

Convert binary numbers to hexadecimal.

Convert hexadecimal numbers to binary.

Convert binary numbers to octal.

Convert octal numbers to binary.

Convert decimal numbers to hexadecimal.

Convert hexadecimal numbers to decimal.

Convert decimal numbers to octal.

Convert octal numbers to decimal.

Convert hexadecimal numbers to octal.

Convert octal numbers to hexadecimal.

Format, beautify, and validate JSON with clean indentation.

Compress JSON onto one line by stripping whitespace.

Escape special characters into HTML entities.

Turn HTML entities back into readable characters.

Find a percentage of a number, plus increase and decrease.

Calculate your exact age in years, months, and days.

Find the mean, median, sum, min, and max of a list of numbers.

Work out the sale price and savings from a percent off deal.

Add sales tax to a price and see the total.

Calculate profit, profit margin, and markup from cost and price.

Estimate monthly payment, total paid, and total interest.

Count the number of days between two dates.

Upload a photo, type your caption, style the color, outline, font, and size, then drag it into place and download. A simple meme and caption maker.

Convert JPG images to PNG, free and in your browser.

Convert PNG images to JPG with an adjustable quality slider.

Convert JPG images to the smaller WebP format.

Convert WebP images to widely supported JPG.

Convert WebP images to lossless PNG, keeping transparency.

Convert PNG images to the smaller WebP format.

Convert PNG images to uncompressed BMP bitmap files.

Convert JPG images to uncompressed BMP bitmap files.

Turn a PNG into an ICO icon or favicon, keeping transparency.

Turn a JPG into an ICO icon or favicon.

Convert an ICO icon or favicon into a PNG image.

Turn any image into an ICO icon or favicon.

Convert images between PNG, JPG, WebP, BMP, and ICO.

Convert JPG images to PNG, WebP, BMP, or ICO.

Resize images to exact pixel dimensions, in your browser.

Make an image bigger by setting new pixel dimensions.

Rotate a photo left or right and flip it, then download.

Mirror a photo horizontally or vertically.

Crop a photo by dragging a box over the area to keep.

Convert an image into a Base64 data URL for HTML or CSS.

Decode a Base64 string or data URL back into an image.

Convert a hex color code into RGB, RGBA, and HSL values.

Convert red, green, and blue values into a hex color code.

Generate placeholder text by paragraphs, sentences, or words.

Create strong, random passwords with letters, numbers, and symbols.

Create a fake iMessage mockup on an iPhone 16 Pro. Type both sides, switch blue or green bubbles, and download a JPG.

Live times across major world cities plus a timezone converter for planning across zones.

Find out how many jelly beans you weigh!

See your name written in 12 different writing systems!

See everything your browser reveals about you - comprehensive digital fingerprinting!

Count characters, words, sentences, lines, paragraphs, and estimate tokens in any text - all processed locally in your browser.

Look up domain registration info - registrar, key dates, name servers, and contacts - via RDAP.

Get geolocation, ISP, timezone, and network (ASN) details for any IP address.

Study GRE vocabulary words with flashcards. See definitions, pronunciations, and examples.

Learn all 27 amendments to the U.S. Constitution with interactive flashcards.

Explore all 85 essays by Hamilton, Madison, and Jay that shaped the Constitution.

Test your geography knowledge! Learn the capitals of every country with an interactive map.

Learn idioms, phrases, and slang with flashcard-style learning.

Test your Scripture knowledge! Guess the chapter and verse from famous Bible quotes.

Start with 2 and see how high you can go!

Play the classic word-guessing game! Guess the 5-letter word in 6 tries with color-coded hints.

Mesmerizing journey through every color in the universe with smooth transitions

Every single pixel is a unique random color!

Watch a clean white grid slowly fill with black squares in random sequence over time.

The loading bar that takes exactly 1 hour to complete!

Create your own ambient music by clicking anywhere on the screen!

Test the infinite monkey theorem - watch a computer randomly generate words until it types a target phrase.

Get inspired with a new famous quote every day from history's greatest minds.

Learn something new every day with a random Wikipedia article discovery.

Describe a real-life scenario and get AI-powered Biblical analysis with supporting Scripture verses.