UUID6 Generator

Generate time-ordered UUIDs (reordered v1)

UUID6

Click 'Generate' to create your first UUID6

History

History is stored locally only and not sent to any server

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Technical Details

Version
6 (Time-ordered)
Length
36 characters
Format
8-4-4-4-12
Sortability
Time-ordered

Structure Breakdown

Timestamp High (32 bits):Reordered for sorting
Timestamp Mid (16 bits):Timestamp part
Timestamp Low (16 bits):Timestamp part
Clock Sequence (14 bits):Sequence counter
Node ID (48 bits):MAC address or random

Applications & Performance

Database Optimized

UUID v6 reorders timestamp components for better database performance and reduced index fragmentation.

Best Use Cases

  • Database primary keys
  • Time-ordered IDs
  • Reduced index fragmentation
  • UUID v1 compatibility

Performance Characteristics

Sortability
Time-ordered
Indexing:
Optimized
Fragmentation:
Reduced
Performance:
Excellent