21 tools, no sign-up
Everyday tools that are instant and exact
Converters for weight, height, temperature, speed, volume, area, time and data, plus a word counter, a case converter, a typing speed test, a BMI calculator, a decibel meter, and generators for passwords, UUIDs and placeholder text. Nothing to install, and nothing you type ever leaves your browser.
Unit converters
Eight dimensions, from weight and temperature to area and data storage. Type a value once and every unit in the list reads back beside it.
Calculators
Percentages worked four ways, and an age counted in years, months and days. Neither asks you to remember which way round the formula goes.
Text tools
Count it, re-case it, encode it for a URL or as base64, or time yourself typing it. Whatever you paste is processed in this tab and never uploaded.
Generators
Placeholder copy measured in paragraphs, sentences, words or characters, version 4 UUIDs drawn from the browser's own randomness, and SHA digests of whatever you paste.
Security
Passwords built from the browser's cryptographic randomness and scored in bits of entropy, so the strength claim is a number rather than a colour.
Health
Body mass index against WHO, WHO Asian or Indian consensus cut-offs, with an advanced mode for the measurements BMI alone cannot see.
Audio
A live decibel meter for the sound around you. It listens only while you ask it to, and nothing it hears is recorded or leaves the tab.
Missing a tool?
The list grows from what people ask for. If you converted something today by opening a search engine instead of this site, write in — the address is read by the person who builds it.