UUID Generator

The UUID Generator creates universally unique identifiers and can also validate ones you paste in, supporting the time-based version 1 and the widely used random version 4. You can generate a single UUID or a whole batch at once, with formatting options to match wherever the identifiers will be used.

Developers rely on UUIDs as database primary keys, request correlation IDs and unique references in situations where collisions simply cannot be allowed. Version 4 draws on cryptographically secure randomness, so the chance of two generated values ever clashing is astronomically small, which is exactly why it has become the default choice.

Generation runs locally in your browser with nothing uploaded, so producing a bulk set of identifiers is instant and private. There is no install and no sign-up, making it easy to grab as many UUIDs as a migration, test fixture or new feature happens to need. Because the work never touches a server, you can generate identifiers for internal systems without exposing anything about them.