UUID Generator
Generate UUID/GUID in multiple versions and formats
550e8400-e29b-41d4-a716-446655440000
Generated UUIDs (1)
103850a2-4c5d-477e-81be-5f76cac1e4fb
Bulk Generation
About UUIDs
What is UUID?
UUID (Universally Unique Identifier) is a 128-bit number used to uniquely identify information in computer systems.
- • 128-bit identifier
- • Globally unique
- • No central authority needed
- • Multiple versions available
Common Use Cases
- • Database primary keys
- • Session identifiers
- • File naming
- • API request tracking
- • Distributed systems
- • Transaction IDs
Version Differences
UUID v1
Based on timestamp and MAC address. Provides uniqueness but may reveal information about the generating system.
UUID v4
Randomly generated. Most commonly used version. Provides excellent uniqueness with no information leakage.