UUID/GUID Generator
Generate unique identifiers instantly
Format Options
What is a UUID?
- UUID = Universally Unique Identifier
- GUID = Globally Unique Identifier (same thing)
- 128-bit number represented as 32 hexadecimal digits
- Displayed in groups: 8-4-4-4-12
- Version 4 UUIDs are randomly generated
- Probability of collision is astronomically low
Common Uses:
- Database primary keys
- Session identifiers
- Transaction IDs
- File naming and tracking
- API request identifiers
- Distributed systems coordination
Note: All UUIDs generated here are Version 4 (random). They are cryptographically strong random numbers suitable for most identification purposes. Each UUID has a uniqueness guarantee of approximately 1 in 5.3 × 10³⁶.