UUID Generator

Generate a UUID Online — Free

Generate random, unique identifiers (UUIDs) instantly — one at a time or in bulk — for use in code, databases, or anywhere you need a guaranteed-unique ID.

How to Generate a UUID

Click "Generate" and a new UUID appears instantly, ready to copy. Need several at once? Generate a batch and copy the whole list in one go.

What a UUID Actually Is

A UUID (Universally Unique Identifier) is a 128-bit value, usually written as 32 hexadecimal characters split into five groups, like f47ac10b-58cc-4372-a567-0e02b2c3d479. It's designed so that generating one anywhere, at any time, is astronomically unlikely to collide with one generated anywhere else — which is exactly why they're used to identify database rows, API requests, and objects across distributed systems without needing a central authority to hand out IDs.

Good Uses for This Tool

Generating a primary key for a new database record, creating a unique ID for a test fixture or sample data, tagging a request or session with a unique identifier, or getting a one-off UUID for a config file or script.

Is It Actually Private?

Yes. UUIDs are generated locally in your browser using your device's random number generator — nothing is sent to a server.