UUID Generator

Generate Universally Unique Identifiers (UUID) for your applications. UUIDs are 128-bit identifiers that are unique across time and space.

Generate UUID
UUID Versions
  • UUID v1: Generated from timestamp and MAC address (node ID). Useful when you need time-based ordering.
  • UUID v4: Completely random according to RFC 4122. Most commonly used version.
  • UUID v7: Based on Unix timestamp with random component. Best for database indexes as it maintains temporal ordering.
UUID Format

All UUIDs follow the standard format:

xxxxxxxx-xxxx-Mxxx-Nxxx-xxxxxxxxxxxx

Where M indicates the UUID version (1, 4, or 7) and N indicates the variant.

Important Notes
  • All UUIDs are generated in your browser - no data is sent to the server.
  • Each UUID is guaranteed to be unique within a single generation batch.
  • UUID v1 may expose your MAC address - use v4 or v7 if privacy is a concern.
  • UUID v7 is recommended for database primary keys due to its temporal ordering.