UUID generator
Generate 1 to 100 random version 4 UUIDs in your browser.
Choose a count and press Generate. Copy all UUIDv4 values together, one per line.
Result
Enter your data and run the tool. Your result will appear here.
The values you enter stay on this page. Reloading or closing it clears them.
We count which tools are used most, without including entered values or file contents in the statistics. Privacy
Method, examples and limits
Each UUID uses 16 random browser bytes with version 4 and RFC 9562 variant bits. The format is xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx, where y ranges from 8 to b. It contains no timestamp or hardware address. Collision probability is very low, but persistent keys should still use a database uniqueness constraint. The generator does not keep a record of used identifiers.
Reference sources
Frequently asked questions
Which UUID version is generated?
UUID version 4, with RFC 9562 version and variant bits and browser-provided randomness.
Is this data saved?
The values you enter stay on this page. Reloading or closing it clears them.