UUID Generator
Generate random version-4 UUIDs (universally unique identifiers) one or many at a time, using your browser’s secure random generator. Copy with one click.
🔒 Runs 100% in your browser — nothing is uploaded
About the UUID generator
UUIDs let you create unique identifiers anywhere, without coordinating with a server or database. This generator produces random version-4 UUIDs using your browser's secure random source, so they are unpredictable and generated entirely on your device. Generate one or up to 100 at once and copy them individually or all together.
Frequently asked questions
What is a UUID?
A UUID (universally unique identifier) is a 128-bit value, written as 36 characters, used to label things uniquely without a central authority — database rows, files, API keys and more.
Which version is this?
Version 4 — random UUIDs. They are generated using your browser’s cryptographically secure random number generator.
Are they truly unique?
The chance of a collision is astronomically small. For practical purposes, random v4 UUIDs are unique.