Developer
UUID Generator
Generate UUID v4 values, bulk UUID batches, and UUID reference values locally in your browser.
This tool generates UUID v4 values locally. UUID v7 is intentionally not generated here until the implementation can be kept dependency-free and standards-aligned.
Reference UUIDs
- Nil UUID:
00000000-0000-0000-0000-000000000000 - Max UUID:
ffffffff-ffff-ffff-ffff-ffffffffffff
0Generated
v4Version
100Max batch
How to use UUID Generator
Best for
- Creating quick test IDs for fixtures, mock data, and examples.
- Generating a small batch of UUID v4 values without installing a package.
- Copying nil and max UUID reference values when documenting ID behavior.
Steps
- Choose how many UUIDs to generate.
- Generate the batch locally in your browser.
- Copy one UUID, the whole batch, or the reference values you need.
Notes
- UUIDs are designed to make collisions unlikely, not mathematically impossible.
- Do not use UUIDs as passwords, API keys, session secrets, or security tokens.
FAQ
Does UUID Generator upload generated IDs?
No. UUIDs are generated in your browser and are not sent to a server.
Are UUIDs guaranteed to be unique?
No. UUID v4 values have a very large random space, but uniqueness is still probabilistic.