UUID Generator

Generate unique identifiers for your applications

Generate UUIDs

Generate cryptographically secure UUID v4 identifiers

About UUIDs

What is a UUID?

A Universally Unique Identifier (UUID) is a 128-bit identifier that is unique across both space and time. UUIDs are commonly used in distributed systems to identify information without significant central coordination.

UUID v4 Format

Version 4 UUIDs are randomly generated and have the format: xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx, where x is any hexadecimal digit and y is one of 8, 9, A, or B.

Common Use Cases

  • • Database primary keys
  • • API request identifiers
  • • Session tokens
  • • File names for uploads
  • • Transaction IDs
  • • Component keys in React