Unit converter

Convert length, weight, data, time and temperature.

How it works

Three simple steps — all in your browser.

Unit converter runs entirely on your device — no upload, no account, and nothing to install.

Convert length, weight, data, time and temperature. Everything happens instantly as you go.

Download or copy the output straight away. Your data never leaves your device.

Unit converter works locally in your browser — your files and text are never sent to a server.

No sign-up, no trial, and no usage limits. Open the tool and start straight away.

Runs in any modern browser on desktop, tablet or phone — nothing to download.

Is Unit converter free to use?

Yes — every tool here is completely free, with no account, sign-up, or usage limits.

Is anything uploaded to a server?

No. Unit converter runs entirely in your browser, so your data never leaves your device.

Do I need to install anything?

No. It works in any modern browser on desktop or mobile — there is nothing to download or install.

Does it work offline?

Once the page has loaded, the processing happens locally, so it keeps working even on a flaky connection.