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UUID Generator

Generate random version 4 UUIDs / GUIDs one at a time or in bulk. Copy with one click — free online UUID generator.

How many Uppercase

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What is the uuid generator?

Generate random version 4 UUIDs (also called GUIDs) one at a time or up to 500 at once, in lowercase or uppercase.

How to use the UUID Generator

Choose how many UUIDs you need.
Click Generate.
Copy them all with one click.

Common uses

Database primary keys
Test data
Unique file or request IDs

Frequently asked questions

What is the difference between a UUID and a GUID?

They are the same thing. GUID is Microsoft's name for a UUID.

Can two v4 UUIDs be the same?

In practice, no. There are 2¹²² possible values, making duplicates extremely unlikely.

How are they generated?

With your browser's secure random generator (crypto.randomUUID).

Also known as: guid generator, uuid v4 generator, random uuid, bulk uuid generator, generate guid online, unique id generator.

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