How to use UUID generator
- Enter how many UUIDs you need.
- Pick uppercase, no hyphens or braces if your system expects them.
- Copy all or download as .txt.
Questions
Can two UUIDs ever be the same?
In practice, no. A v4 UUID has 122 random bits, so the chance of a collision is vanishingly small.
What's the difference between a UUID and a GUID?
They're the same thing. GUID is Microsoft's name for a UUID.
Last updated 13 November 2026.