UUID Generator
Generate universally unique identifiers. Supports v1, v3, v4, v5, and v7.
100% client-side · no data stored
Bulk Generation
Count
History
No history recorded yet.
About UUID versions
v4 - Random
Cryptographically random. Most common choice.
v7 - Time-ordered
Sortable by creation time. Ideal for database primary keys.
v1 - Time + MAC
Based on timestamp and node ID. Sortable but exposes timing.
v3 - Named (MD5)
Deterministic - same namespace + name gives same UUID using MD5.
v5 - Named (SHA-1)
Deterministic - like v3 but uses more secure SHA-1 hashing.