UUID/GUID Generator
Generate universally unique identifiers in various formats
Generation Options
Randomly generated, most common
Choose how the UUID should be formatted
No UUIDs generated yet
Click "Generate UUID" to create unique identifiers
About UUIDs/GUIDs
A UUID (Universally Unique Identifier) or GUID (Globally Unique Identifier) is a 128-bit identifier used to uniquely identify information in computer systems.
Version 4 (Random)
Most commonly used, generated from random numbers. Provides good uniqueness with minimal information leakage.
Version 1 (Time-based)
Based on timestamp and MAC address. Guarantees uniqueness but may reveal information about when and where it was generated.
Version 7 (Time-ordered)
Newer standard that combines timestamp with random data. Better for database performance due to natural ordering.