UUID Validator

Validate existing UUIDs with comprehensive format analysis for versions 1, 4, and 5. Support for batch validation and detailed technical breakdown.

UUID Input

Generate New UUIDs

Validation Results

Enter a UUID above to see validation results and detailed analysis...

💡 Supports both formats:
• With hyphens: 550e8400-e29b-11d4-a716-446655440000
• Without hyphens: 550e8400e29b11d4a716446655440000

About UUID Validation

Version 1 (Time-based)

  • • Generated using timestamp and MAC address
  • • Guaranteed uniqueness but reveals creation details
  • • Contains node identifier and precise timestamp

Version 4 (Random)

  • • Generated using random or pseudo-random numbers
  • • Most common UUID version
  • • 122 random bits provide excellent uniqueness

Version 5 (Name-based)

  • • Generated using SHA-1 hash of namespace and name
  • • Deterministic: same input = same UUID
  • • Useful for consistent identifier generation

UUID Format Structure

A UUID is a 128-bit number displayed as 32 hexadecimal digits in the format:

8-4-4-4-12

Example: 550e8400-e29b-11d4-a716-446655440000

Common Use Cases

  • Database primary keys and identifiers
  • API resource identification
  • Distributed system coordination
  • Session and transaction tracking

Validation Features

  • Format validation (with/without hyphens)
  • Version and variant identification
  • Batch validation support
  • Detailed technical analysis