UUID Generator

Generate random RFC-4122 version-4 UUIDs right in your browser — no upload, no sign-up.

How to use

  1. Choose how many UUIDs you want, from 1 to 100.
  2. Pick uppercase or remove the hyphens if you need a different shape.
  3. Press Generate, then copy them or download them as a .txt file.

FAQ

What is a version-4 UUID?

A version-4 UUID is a 128-bit identifier built almost entirely from random bits, written as 32 hex characters in the 8-4-4-12 pattern. The odds of two ever clashing are vanishingly small, so they make great unique IDs for records, files and keys.

Are these UUIDs truly random and safe to use?

Yes. They come from your browser’s built-in cryptographic random generator, so each one is unpredictable. Nothing is sent anywhere — every UUID is created on your own device.

Can I get them in uppercase or without dashes?

Yes. Tick Uppercase to switch the hex letters to capitals, and tick Remove hyphens for a plain 32-character string. You can combine both.