About the UUID Generator tool
Get unique identifiers for databases, APIs and test data. Generate one or a thousand, in the format your code expects, using your browser’s cryptographic random generator.
How to use it
- Choose v4 (random) or v7 (time-ordered).
- Set how many and the format.
- Click Generate and copy.
Frequently asked questions
v4 or v7?
v4 is fully random and the most common. v7 starts with a timestamp, so IDs sort by creation time — great for database primary keys.