UUID Generator
Developer
Create cryptographically random UUID v4 identifiers using your browser's built-in generator. Choose how many you need, toggle uppercase or hyphens, and copy them all at once. Useful for database keys, test data, and unique identifiers. Runs entirely in your browser.
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UUIDs
How to use
- Set how many UUIDs to generate.
- Optionally toggle uppercase or remove hyphens.
- Press Generate for a fresh batch.
- Copy all of them with the Copy button.
Frequently asked questions
- What kind of UUIDs are these?
- Version 4 (random) UUIDs from crypto.randomUUID(), which uses a cryptographically secure random source.
- Are they guaranteed unique?
- v4 UUIDs aren't strictly guaranteed unique, but collisions are astronomically unlikely in practice.
- Can I remove the hyphens?
- Yes, toggle hyphens off to get a 32-character hex string.
- Is anything sent to a server?
- No. UUIDs are generated locally in your browser.
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