🆔UUID Generator

Generate UUIDs (v1, v4)

Version

Count

Want a deeper walkthrough? Read our complete guide to UUID Generator →

About the UUID Generator

UUID Generator creates universally unique identifiers (UUIDs/GUIDs) for use as primary keys, request IDs, and other identifiers that must not collide.

Generate one or many at once. IDs are produced locally in your browser, so they are never logged or transmitted.

Common use cases

Creating database primary keys
Generating request or correlation IDs for logs
Seeding test data with unique values
Producing unique file or resource names

How to use the UUID Generator

Choose the UUID version you need.
Click Generate to create one or more UUIDs.
Copy the generated identifier(s).

Frequently asked questions

What is the difference between v1 and v4 UUIDs?

v1 is time-based and includes a timestamp, while v4 is randomly generated. v4 is the most common choice for general-purpose IDs.

Are the UUIDs truly unique?

The probability of a v4 collision is astronomically small, making them safe as unique identifiers in practice.

Are they generated locally?

Yes, UUIDs are created in your browser and never sent anywhere.