Tool4SaaS

UUID Generator

Generate RFC-4122 v4 UUIDs using your browser's crypto. Create one or many at once, optionally uppercase, an. 100% private and offline.

Generated with crypto.randomUUID() — RFC 4122 version 4.

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About the author

Written and maintained by the Tool4SaaS team. Every tool runs locally in your browser and is tested in-house for accuracy. Last updated: .

Frequently asked questions

A universally unique identifier (RFC 4122), often used as a unique ID in software.

They use random v4 generation; collisions are astronomically unlikely.

Yes, it is free, works offline in your browser, and your data never leaves your device.

How to use UUID Generator

  1. Set count: Choose how many UUIDs to generate.
  2. Toggle case: Toggle uppercase if needed.
  3. Copy UUIDs: Copy the generated UUIDs.