UUID Generator
Collision-safe IDs on demand.
Runs on your device
At a glance
- Input:
- Text / data you paste
- Processing:
- Runs locally in your browser
- Privacy:
- Your files stay on your device — nothing is uploaded to a server
About this tool
Bulk UUIDv4 generation with copy-all convenience and formatting options for whatever your stack expects.
How to use it
- Choose quantity (1–1000).
- Toggle case, hyphens or braces.
- Generate and copy all in one click.
Frequently asked questions
How random are these UUIDs?
Generated with crypto.randomUUID() backed by your operating system's cryptographic RNG — suitable for production identifiers, unlike Math.random-based fakes.
What are the odds of collision?
Astronomically small: you'd need to generate billions per second for centuries to expect one duplicate. Version-4 UUIDs offer ~122 bits of randomness.
Uppercase or braces style?
Both available, plus no-hyphen compact form — handy for specific database or API requirements.