UUID Generator

Generate random UUIDs for development.

How to Do It Manually

UUIDs (Universally Unique Identifiers) are 128-bit numbers displayed as 32 hexadecimal characters in 5 groups. Used to uniquely identify resources. UUID v4 is randomly generated.

Frequently Asked Questions

Are UUIDs guaranteed to be unique?

UUID v4 (random) has 2^122 possible values. Collision probability is astronomically low but not zero.

What's the difference between UUID versions?

v1: time-based, v3/5: name-based, v4: random. v4 is most common for general use.

Can I generate UUIDs in my app?

Yes, most languages have UUID libraries (Python uuid, Node.js uuid package, etc.).