UUID Generator
Generate random version-4 UUIDs.
About the UUID Generator
The UUID Generator creates random version-4 universally unique identifiers, the 128-bit values widely used as database keys, request IDs and resource identifiers. Each UUID is generated from random data, making accidental collisions astronomically unlikely. Generation uses your browser's built-in randomness, so the values are produced locally and never sent anywhere.
How to use
- Open the tool to generate a fresh version-4 UUID.
- Generate one or several identifiers as needed.
- Copy a UUID to your clipboard.
- Paste it into your database, config or code.
Frequently asked questions
- What is a version-4 UUID?
- A version-4 UUID is generated almost entirely from random numbers, with a few bits reserved to mark its version and variant. It does not encode any time or hardware information.
- Are these UUIDs guaranteed to be unique?
- Uniqueness is statistical rather than guaranteed, but the random space is so large that the probability of a collision is negligible for practical use.
- Can I use these in production systems?
- Yes. Version-4 UUIDs are a standard choice for keys and identifiers. Because they are generated client-side here, no list of values is stored or transmitted.