GUID Generator.

Generate cryptographically random UUIDs locally, then format them for your language or configuration file.

UUID / GUID

Generate identifiers

UUID v4 uses your browser's secure random-number generator. UUID v7 is time-sortable.

Version

How many

Output format Uppercase output

Generated output

Which version should I use?

Use UUID v4 for general-purpose random identifiers. Use UUID v7 when identifiers should roughly follow creation time, which can improve database index locality. Neither format is a secret or an access token.