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UUID Generator

Generate as many random v4 UUIDs as you need, formatted exactly how you want them.

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How to use

  1. Set how many UUIDs you want with the slider.
  2. Toggle hyphens and uppercase to match your format.
  3. Copy a single UUID or all of them at once.
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Frequently asked questions

Are these truly random?

Yes. UUIDs are generated with crypto.randomUUID (or crypto.getRandomValues as a fallback), the same secure randomness used for cryptography.

What is a v4 UUID?

A 128-bit identifier where all bits except a few fixed version/variant bits are random, making collisions astronomically unlikely.

Are the UUIDs stored anywhere?

No. They're generated in memory in your browser and never sent to a server.

About this tool

UUID Generator is a free, browser-based tool from Tools Platform. It runs entirely on your device — your data is never uploaded to a server, so it stays completely private. There are no accounts, no watermarks, and no limits. Generate as many random v4 UUIDs as you need, formatted exactly how you want them.