UUID Generator
UUID Generator is a free developer tool that runs directly in your browser with no account required.
About this tool
Generate one to fifty random UUID v4 identifiers in a single click. Each value comes from the browser's crypto.randomUUID function, which draws on a cryptographically secure random source, and results are listed one per line for easy copying.
How to use
- Enter the number of identifiers you need in the How many field (1 to 50).
- Review the generated list in the output box.
- Copy the values into your code, database seed, or config.
Frequently asked questions
Which UUID version is generated?
Version 4 (random) UUIDs, produced by the browser's native crypto.randomUUID function.
How random are these values?
crypto.randomUUID uses the browser's cryptographically secure random number generator, the same source used for keys and tokens, so collisions are effectively impossible in practice.
Can I generate more than 50 at once?
The count is capped at 50 per run to keep the output manageable. Run the tool again for additional batches; every batch is independent.
Are the UUIDs sortable by creation time?
No. Version 4 UUIDs are fully random and carry no timestamp. If you need time-ordered identifiers, look at UUID v7 or ULIDs instead.
Could anyone else see the UUIDs I generate?
No. Generation happens entirely in your browser and nothing is transmitted, so the values exist only on your machine until you paste them somewhere.