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UUID Generator

Generate random UUID v4 identifiers. Click to copy any UUID.

Click any UUID to copy

Frequently Asked Questions

What is a UUID?

A UUID (Universally Unique Identifier) is a 128-bit identifier used to uniquely identify information in computer systems. UUIDs are commonly used as database primary keys, session identifiers, transaction IDs, and distributed system identifiers because they can be generated independently without a central authority.

What is the difference between UUID v4 and UUID v5?

UUID v4 is generated randomly — each call produces a different, unpredictable identifier. UUID v5 is deterministic — it generates the same UUID for the same input namespace and name, making it useful when you need repeatable, name-based identifiers (similar to hashing).

Can I generate multiple UUIDs at once?

Yes, the tool supports bulk generation. You can generate as many UUIDs as you need in a single click. All generation happens in your browser — no server requests involved.