What this site is
FigureKind brings together everyday calculators and practical online tools in one place, with nothing to install and no account to create:
- Calculators for everyday maths, algebra and statistics, dates and time, unit conversions, study, personal finance, health and geometry.
- PDF and image tools to merge, split, compress, convert, resize and watermark files — one at a time or in bulk.
- Developer, text and colour tools such as JSON and SQL formatters, converters, generators, encoders, colour pickers and contrast checkers.
How everything works
- It runs in your browser. Numbers you type, text you paste and files you choose — including PDFs and photos — are processed on your own device. They are not uploaded to or stored on our server.
- It explains itself. Every page describes how the result is worked out, gives an example and lists the limitations, so you can check the answer.
- It is tested. The maths and conversions behind each page are covered by automated tests against known reference values — from leap years and zero-interest loans to published hash and HMAC test vectors and byte-exact file output.
- It is honest about limits. Financial and health results are estimates, and file tools say clearly what they change. Each page states what it does not account for.
How the site is funded
The site may display clearly labelled advertising to cover hosting and development. Advertising never changes how a calculator or tool works or what result it gives.
Get in touch
Found a mistake, or want a new calculator or tool? Visit the contact page.