UUID Generator (v4 and v7)

About this tool

Generate up to 10,000 UUIDs at once, in lower or upper case, using your browser's cryptographically secure random number generator.

Version 4 UUIDs are fully random and are the usual default for unique identifiers. Version 7 UUIDs (RFC 9562) start with a millisecond timestamp, so they sort in creation order, which keeps database indexes compact when used as primary keys.

How to use it

1. Choose v4 for random IDs or v7 for IDs that sort by creation time.
2. Set how many you need and whether they should be upper case.
3. Generate and copy the list.

Example

Input:

Version 4, 1 UUID   /   Version 7, 1 UUID

Sample output (yours will differ):

3b241101-e2bb-4255-8caf-4136c566a962
019a5a8c-1f2e-7c3d-9a4b-5e6f7a8b9c0d