UUID Generator
Generate multiple versions of UUIDs (RFC 9562) with advanced validation and detailed information
Random
Randomly or pseudo-randomly generated
UUID Versions Comparison
V1
TimestampSecurity:Low
Uniqueness:High
Sortable:Yes
Best for:Legacy systems
V3
Namespace (MD5)Security:Medium
Uniqueness:High
Sortable:No
Best for:Deterministic IDs
V4
RandomSecurity:High
Uniqueness:Very High
Sortable:No
Best for:General purpose
V5
Namespace (SHA-1)Security:Medium
Uniqueness:High
Sortable:No
Best for:Deterministic IDs
V6
Timestamp (Reordered)Security:Low
Uniqueness:High
Sortable:Yes
Best for:Sortable timestamps
V7
Unix TimestampSecurity:High
Uniqueness:Very High
Sortable:Yes
Best for:Modern systems
About UUIDs
UUIDs (Universally Unique Identifiers) are 128-bit values used to uniquely identify information. They follow RFC 9562 (formerly RFC 4122) standards.
- Format: 32 hexadecimal digits in 5 groups (8-4-4-4-12)
- Probability of collision: Virtually zero
- Cross-platform: Works everywhere
- No central authority: Generate anywhere
Common Use Cases
DB
Database primary keys and foreign keysAPI
REST API resource identifiersSession
User session and authentication tokensFile
Unique file and resource namesEvent
Event tracking and correlation IDsMsg
Message queuing and distributed systemsAvailable for Freelance
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