UUID generator
Create random version 4 UUIDs for databases, tests and APIs.
🔒 Everything runs in your browser. Nothing you choose or type is uploaded. How to verify
How to use it
- Choose how many you need.
- Pick the format.
- Select Run and copy the list.
Handy for
Creating unique IDs for databases, test data and API requests.
Good to know
A version 4 UUID has 122 random bits. Never use a UUID as a secret, because it is an identifier and not a password.
Privacy: where the work happens
Everything you enter or choose is processed by JavaScript in your browser and never sent anywhere. Only the page code, and any library this tool needs, is downloaded from cdnjs or jsDelivr.
Questions
Are the UUIDs truly random?
They use your browser’s cryptographic random generator and follow the version 4 layout.
Can two UUIDs match?
The chance is so small that it is ignored in practice.