About Toolskia

Toolskia is a growing collection of fast, free, genuinely useful online tools — built to do one job well and respect your privacy while doing it.

What we make

Calculators, converters, generators and practical helpers — from a knitting gauge calculator to compound-interest planners. Every tool is hand-built as a single, focused page that loads fast and works on any phone or laptop. No bloated dashboards, no sign-up walls, no twelve pop-ups before you can use the thing you came for.

How we build

We have a simple rule: a tool only ships when it is genuinely better than what is already out there — clearer, faster, more accurate, and pleasant to use. The math is tested, the explanations are written by hand, and nothing goes live as filler. We would rather publish one tool that is excellent than fifty that are mediocre.

Our promises

🔒 Private by design. Tools run entirely in your browser. The numbers and text you enter are never uploaded to a server, because there is no server doing the work — your device does.

🎁 Free, no sign-up. No account, no paywall, no "free trial" trap. Open a tool and use it.

⚡ Fast & lightweight. Single-page, minimal code. It loads quickly even on a slow connection.

📱 Works everywhere. Built mobile-first, so it is just as usable on a phone as on a desktop.

How Toolskia is funded

Toolskia is free to use and supported by unobtrusive advertising. Ads help us keep the tools free and add new ones — they never change a tool's results, and we keep them out of the way of the thing you came to do. We do not sell your data; the tools could not, even if we wanted to, because they run on your device.

A note on accuracy

Our tools are built carefully and tested, but they are provided for general guidance and estimation. For decisions with real financial, medical, legal or professional consequences, please confirm with a qualified professional or an authoritative source. Where a craft tool gives a result, your own swatch or measurement is always the final word.

Have an idea for a tool, spotted a bug, or want to say hello? Get in touch — we read everything.