UUID / GUID Generator

Quickly generate cryptographically secure Version 4 UUIDs (Universal Unique Identifiers) in bulk.

What is a UUID / GUID?

A Universally Unique Identifier (UUID), also known as a Globally Unique Identifier (GUID) in the Microsoft ecosystem, is a 128-bit label used for information in computer systems. The term GUID is generally used by developers working with Microsoft technologies, while UUID is used everywhere else.

Our UUID Generator uses your browser's cryptographically secure pseudo-random number generator (CSPRNG) to create Version 4 UUIDs. A v4 UUID is generated entirely from random numbers, offering an incredibly low probability of collision (duplication).

Common Uses for UUIDs

  • Database primary keys instead of auto-incrementing integers.
  • Tracing identifiers for distributed microservices.
  • Session identifiers for web applications.
  • Randomized file names to prevent overwriting cloud storage blobs.