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UUID generator

Create universally unique identifiers: random UUID v4 or time-ordered UUID v7 (RFC 9562) that sort by creation time — ideal for database keys. Generated locally with the browser's cryptographic randomness.

Everything runs in your browser — nothing is sent anywhere

How to use

  1. 1

    Pick v4 or v7 and how many you need.

  2. 2

    Click Generate new for a fresh batch.

  3. 3

    Copy the list.

FAQ

What is the difference between v4 and v7?

v4 is fully random. v7 starts with a millisecond timestamp, so IDs sort chronologically and index better in databases.

Are these UUIDs truly unique?

With 122 random bits the chance of a collision is negligible — you would need to generate billions per second for centuries.

Are they generated on a server?

No. They come from crypto.getRandomValues in your browser and are never transmitted.

Can I generate a lot at once?

Up to 500 per click.

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