UUID Generator
Generate cryptographically random identifiers
UUID v4
76147c08-d614-4bef-972f-54bed797c831
Bulk Generator
About UUIDs
- •UUID v4 uses cryptographic randomness — the chance of a collision is astronomically small (roughly 1 in 5.3 × 10³⁶).
- •UUIDs are commonly used as database primary keys, session tokens, file names, and API resource identifiers.
- •All generation happens locally in your browser using the Web Crypto API — nothing is sent to a server.
- •A UUID v4 contains 122 bits of randomness and follows the format xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx.