UUID generator
Get unique IDs for databases, tests and files.
Runs entirely in your browser. Nothing you type is sent anywhere.
How to use the UUID generator
Version 4 UUIDs are random, generated with your browser’s secure random number generator, so collisions are practically impossible.
- Choose how many UUIDs you need.
- Pick a format.
- Copy them. Tap Generate new for a fresh set.
Questions
Can two UUIDs ever be the same?
In practice, no. A version 4 UUID has 122 random bits, so a repeat is astronomically unlikely.
Is a UUID the same as a GUID?
Yes. GUID is the name Microsoft uses for the same format.