UUID Generator

Free UUID generator. Generate RFC4122 version 4 UUIDs (GUIDs) instantly. Generate up to 100 at once.

How the UUID Generator works

Each UUID v4 is a 128-bit random identifier. The generator fills 122 bits with cryptographically secure random values, then fixes the version nibble to 4 and the variant bits to 10, formatting the result as five hyphen-separated hex groups per RFC 4122.

How to use the UUID Generator

  1. 1The UUID generator is designed to be simple and fast.
  2. 2Choose how many UUIDs.
  3. 3Press Generate.
  4. 4Copy one or all.
  5. 5Your result is shown immediately.

Examples

  • 1 UUID = 550e8400-e29b-41d4-a716-446655440000 style
  • Generate up to 100 at once

Benefits

  • Completely free with no signup required.
  • Runs entirely in your browser for instant results and privacy.
  • Works on mobile, tablet and desktop.
  • Results can be copied with one click.

Frequently Asked Questions

Is the UUID generator free to use?

Yes. The UUID generator is 100% free, with no signup, no watermark and no hidden limits.

Does the UUID generator store my data?

No. All calculations and processing happen locally in your browser. Nothing is uploaded to a server.

Does the UUID generator work on mobile?

Yes. The UUID generator is fully responsive and works on phones, tablets and desktop computers.

What is a UUID?

A UUID (Universally Unique Identifier) is a 128-bit identifier represented as 32 hex digits in 5 groups. Version 4 uses random numbers, making collisions virtually impossible.

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