UUID generator
Generate up to 100 UUID v4 identifiers and copy them together.
Results
Your generated UUIDs will appear here.
Uses your browser’s cryptographic random number generator. Results are not stored.
How to use UUID generator
- 01Choose a quantity from 1 to 100.
- 02Select uppercase output if needed, then click “Generate UUIDs”.
- 03Copy the identifiers, one per line.
About UUID generator
Create random UUID v4 identifiers using the browser’s Web Crypto API. Results are not sent to a server or saved in browser storage.
UUID v4 format and uses
A UUID is a 128-bit identifier. UUID v4 is random and is displayed as xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx, where y is 8, 9, a or b.
Multiple results appear one per line for easy copying into test data or configuration. Uppercase does not change the value, and UUID v4 does not encode creation time for sorting.
Format JSON containing your UUIDsFrequently asked questions
Which UUID version is generated?
UUID v4, using cryptographic random values from your browser.
Does uppercase change the identifier?
No. Uppercase and lowercase are different representations of the same UUID value.
Why does generation require HTTPS?
The browser’s randomUUID API requires a secure context, such as HTTPS or localhost.
Is it free to use?
Yes. All tools are free, with no account required.
