UUID v4 Generator: Single or Bulk

Generate one UUID v4 or a batch of up to 100. Copy the identifiers or download them as a text file.

Your files and tool inputs never leave this browser. This tool is free to use, with no account and no limit.

How to use this tool

Enter a quantity between 1 and 100.
Generate your UUIDs using the browser's random generator.
Copy the list or download it for test data and development tasks.

Random identifiers for development and test data

Version 4 UUIDs are random identifiers rather than time-ordered values. They are useful for fixtures and application records, but an identifier is not a substitute for access control. This tool generates v4 only, not UUID v1 or v7.

Frequently asked questions

What version of UUID is generated?: Version 4 (random) UUIDs, generated with your browser's cryptographically secure random number generator. Each one is effectively unique.
Can I generate multiple UUIDs at once?: Yes. Set the quantity up to 100. Each UUID is placed on its own line so the list is easy to copy into a fixture or save as text.