About this site

This site exists for one job — a uuid generator that gives a clear answer quickly and shows how it was reached.

How we test the calculations

Before an update is published, the tool runs through 109 automated checks in a real browser: worked examples are recalculated, edge cases and wrong input are tried, and the layout is checked on desktop and on a phone.

What the explanations rely on

Explanations are based on primary sources and recognised references, which are linked in the text (for example rfc-editor.org, developer.mozilla.org).

Our approach

Pages are written and maintained by the site's editorial team. We aim to answer the question people actually ask, show worked examples with real numbers, and say plainly where a calculator cannot replace professional advice. Nothing on this site is sponsored content.

Updates and corrections

First published October 8, 2026; last updated October 12, 2026. If you spot an error or a case the tool handles badly, please tell us through the contact page — corrections are reviewed and published in the next update.

How the site is paid for

The tool is free to use. The site is funded by advertising, which never influences results or explanations.

— UUID Generator editorial team