Find your tool

Cleantool is a small collection of everyday tools for designers, developers and anyone who needs a quick answer without installing software or creating an account. Every tool runs in your browser, so the text you paste, the numbers you type and the files you convert never leave your device. There is no upload step, no queue and no waiting for a server to respond.

The generators cover the placeholder work that fills a layout: lorem ipsum in sensible paragraph lengths, and QR codes you can download and print. The converters handle the fiddly translations between formats, Base64 encoding and decoding, colour values across HEX, RGB, HSL and OKLCH, and aspect ratios that keep an image the right shape at any size.

The calculators are split between general maths, like unit conversion, and UK money. The money tools use current HMRC rates for income tax, National Insurance, dividend tax and student loan repayments, alongside mortgage, loan and savings calculations that show the full repayment picture rather than a single monthly figure. They are built to explain the result, not just print it, so each one breaks the total down and charts how it changes over time.

Everything is free to use and free of accounts. If a tool gives you a result you did not expect, or you want something added, the contact page is the fastest way to reach us, and the guides explain the thinking behind the numbers in more depth.