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UUID Generator

Create random version-4 UUIDs locally, with a choice of how many and one-click copy.

How to use it

  1. Choose how many Generate from 1 to 100 at once.
  2. Generate Press Regenerate for a fresh batch.
  3. Copy them Copy all with one click.

Examples

Format 8-4-4-4-12 hex
Version 4 (random)

About this tool

A UUID (universally unique identifier), also called a GUID, is a 128-bit value used to label things uniquely — database rows, files, sessions and more — without needing a central registry. Version 4 UUIDs are generated from random data.

This generator creates version-4 UUIDs using your browser’s cryptographically secure random source, so they are effectively unique and produced entirely on your device. Generate a single UUID or a batch, and copy them all at once.

Frequently asked questions

What is a UUID?

A UUID (or GUID) is a 128-bit identifier that is, for practical purposes, unique without a central authority. Version 4 UUIDs are random.

Are these UUIDs unique and secure?

They use your browser's cryptographically secure random generator, making collisions astronomically unlikely. They are generated locally and never leave your device.

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Updated June 12, 2026