Password generators, unit and time zone converters, date calculators, random pickers and text tidying tools — the quick jobs that interrupt your day, each one a single focused page that works instantly and keeps your data on your own device.
12 of 12 tools
Convert between length, weight, temperature, volume, speed, data and more.
Generate random numbers in any range, whole or decimal, with no repeats.
Convert millimetres, metres, kilometres, inches, feet, yards and miles instantly.
Convert grams, kilograms, tonnes, ounces, pounds and stones instantly.
Convert Celsius, Fahrenheit and Kelvin, with the formulas shown.
Convert between text, decimal, binary, hexadecimal and octal.
Pick a random winner from a list, or shuffle the whole list fairly.
Generate thousands of UUIDs at once and export them as TXT, CSV or JSON.
Roll D4 to D100 dice, several at once, with modifiers and history.
Translate text to Morse code and back, with clear separators.
Flip a virtual coin for a fair fifty-fifty decision, with running totals.
Convert numbers to Roman numerals and back, with strict validation.
Create strong random passwords with full control over length and characters.
Format, validate and minify JSON, with errors that point to the exact line.
Work out any percentage — of a number, as a share, or as a change.
Find the mean, median, mode and range of a list of numbers, with the working shown.
Sample and population standard deviation and variance, both shown, with the working.
Turn a logo into favicon.ico, the PNG sizes a site needs, and the HTML to declare them.