Small tools that just work.
Everything here runs entirely in your browser. Nothing you type is uploaded, stored, or logged — there is no server to send it to. No account, no limits.
All tools
Unit Converter
Length, weight, temperature, and data sizes with live conversion.
Word Counter
Words, characters, sentences, paragraphs, and reading time as you type.
Password Generator
Strong random passwords using your browser's cryptographic RNG.
Percentage Calculator
Four common percentage questions, answered without the mental arithmetic.
Why these are safe to use
Every tool on this site is implemented in JavaScript that runs on your own machine. Open your browser's network tab while you use one — you will see no requests carrying your input, because there are none. The only third-party requests on the page come from the advertising that funds the site, and those never receive what you type into a tool.