UUID Generator

A UUID (Universally Unique Identifier) is a 128-bit identifier formatted as 32 hexadecimal characters in groups: 8-4-4-4-12. They are used to uniquely identify records, sessions, files, and resources without a central authority.

UUID v4 is randomly generated. It has 122 bits of randomness making collisions practically impossible. It is the most widely used version for general-purpose unique IDs.

Yes. GUID (Globally Unique Identifier) is Microsoft's term for the same standard. They are interchangeable.

Yes. This tool uses the browser's crypto.randomUUID() API (or crypto.getRandomValues() fallback) which is cryptographically secure.