UUID Generator

Generate cryptographically secure UUID v4 identifiers with bulk generation up to 25 at once. Customize formatting with uppercase and no-dashes options for different use cases.

Count:

Generated UUIDs

1 UUID

80e7d8fd-a63b-49b7-8bec-0dfd1e45e559

What is a UUID?

A UUID (Universally Unique Identifier) is a 128-bit identifier that is unique across space and time. Version 4 UUIDs are randomly generated, making collisions virtually impossible.

  • Database primary keys without coordination.
  • Distributed system identifiers.
  • Session tokens and correlation IDs.
  • File naming and resource identification.

UUID v4 Format

A UUID v4 follows the format xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx where each x is a random hexadecimal digit and y is one of 8, 9, a, or b. The "4" indicates version 4, and the y-position variant bits identify it as an RFC 4122 UUID.