UUID5 Generator

Generate name-based UUIDs using SHA-1 hashing

UUID5

Click 'Generate' to create your first UUID5

History

History is stored locally only and not sent to any server

No history yet

Generate values to see your history here

Technical Details

Version
5 (Name-based)
Length
36 characters
Format
8-4-4-4-12
Algorithm
SHA-1 Hash

Structure Breakdown

Namespace Hash (32 bits):SHA-1 of namespace
Name Hash (32 bits):SHA-1 of name
Version (4 bits):5
Variant (2 bits):10

Applications & Security

Deterministic Generation

The same namespace and name will always produce the same UUID. This provides consistency and stronger security than UUID v3.

Best Use Cases

  • Name-based identifiers
  • Cache keys and content addressing
  • Content-based addressing
  • Applications requiring secure hashing

Technical Characteristics

Predictability:
Deterministic
Security Level:
SHA-1 (Secure)
Collision Risk:
Very Low
Performance:
Good