UUID Generator

How to generate UUIDs

1. Choose version 4 or version 7 and how many you need.
2. Pick uppercase, no hyphens or braces to match the format your code expects.
3. Copy them all at once.

Frequently asked questions

What is the difference between UUID v4 and v7?

v4 is completely random. v7 starts with a timestamp, so IDs sort in the order they were made, which keeps database indexes fast.

Can two UUIDs be the same?

In practice, no. A v4 UUID has 122 random bits: making a billion every second for about 85 years gives only a 50% chance of a single duplicate.

Is a GUID the same as a UUID?

Yes. GUID is Microsoft's name for the same 128-bit identifier, often written in uppercase with braces.