UUID Generator

Generate one or multiple random UUID v4 values instantly. Copy to clipboard. Free online UUID generator — no data sent to servers.

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What Is a UUID?

A UUID (Universally Unique Identifier) is a 128-bit value used to uniquely identify information in computer systems. UUID v4 uses random numbers and has the format: xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx

UUIDs are used as database primary keys, session tokens, API request IDs, and anywhere a unique identifier is needed without coordination between systems.

All UUIDs are generated in your browser using the Web Crypto API — no data is sent to any server.