Tools that show their working
Free, fast tools for the jobs a search box can't do in one line — mortgages, take-home pay, PDFs, word games and more. Every one explains the method underneath, and none of them sends your files or figures anywhere.
- Financial CalculatorsMortgages, tax, pay and savings — worked out properly, with the numbers shown.6 tools
- Health & Fitness CalculatorsBody measurements, training numbers and everyday health reference figures.2 tools
- Text ToolsCounting, cleaning and transforming text.12 tools
- Developer ToolsEncoders, formatters, generators and validators.7 tools
- PDF ToolsMerge, split and edit PDFs entirely in your browser — no upload, no sign-up.8 tools
About these tools
There are 35 tools live so far, with more added regularly. Everything runs in your browser — nothing you type is sent anywhere or stored, and there is no sign-up.
Each tool page shows the formula it uses and a worked example with real numbers, because a figure you can't check isn't much use.