UUID Generator
Generate UUID v4 values instantly. Bulk generation up to 1000 at once. Cryptographically random, fully client-side.
Click Generate to create UUIDs.
What is a UUID?
A UUID (Universally Unique Identifier) is a 128-bit value used to identify entities across systems without a central authority. Version 4 UUIDs are randomly generated and are extremely unlikely to collide even across billions of entries.
When to use UUIDs
Database primary keys, distributed systems where IDs must be unique without coordination, session tokens, request IDs for tracing, and any case where you need a unique identifier that doesn't leak information about order or source.