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Online UUID Generator

Generate unique UUIDs (v4) for your applications

Random UUID v4:

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What is a UUID?

A UUID (Universally Unique Identifier) is a 128-bit number used to uniquely identify information in computer systems. Version 4 UUIDs are randomly generated and have an extremely low probability of collision.

Common Use Cases

  • Database primary keys - Unique identifiers for database records
  • Distributed system identifiers - Unique IDs across multiple systems
  • Session tokens - Secure session identification
  • File naming - Unique filenames to prevent conflicts
  • API request tracking - Track requests across services

Format

UUIDs are typically displayed as 32 hexadecimal digits in five groups separated by hyphens:

xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx

Privacy & Security

🔒 Privacy: All UUIDs are generated locally in your browser. No data is sent to any server.