UUID Generator
Generate random UUID v4 identifiers instantly in your browser. Create one or thousands of unique IDs, copy any of them, and download the whole list.
How it works
- 01Choose how many UUIDs you want to generate.
- 02Click Generate to create version 4 UUIDs using your browser's secure random source.
- 03Copy any single UUID with one click, or copy the whole list at once.
- 04Optionally download every generated UUID as a .txt file.
Frequently asked questions
What is a UUID?
A UUID (Universally Unique Identifier), also called a GUID, is a 128-bit value written as 36 characters, such as 550e8400-e29b-41d4-a716-446655440000. It is used to label information without a central authority.
Which UUID version does this generate?
It generates version 4 UUIDs, which are produced from cryptographically secure random numbers. Version 4 is the most common choice for database keys, request IDs and general-purpose unique identifiers.
Are these UUIDs really unique?
Version 4 UUIDs have 122 random bits, so the chance of a collision is astronomically small. For practical purposes you can treat every generated UUID as unique across all of your systems.
Is my data sent to a server?
No. UUIDs are generated locally using your browser's built-in crypto API. Nothing is uploaded, logged or transmitted. The tool works fully offline once the page has loaded.
Can I generate many UUIDs at once?
Yes. Choose how many you need and generate them in bulk, then copy an individual value or download the entire list as a plain-text file for use in scripts, seeds or test data.