UUID Generator

Create unique IDs for databases, APIs and testing, one at a time or thousands at once.

How to use the UUID Generator

  1. Set the options you need.
  2. Click Generate. Click it again for a fresh result.
  3. Copy the result or download it as a file.

What you can use it for

  • Create primary keys and record IDs
  • Generate test fixtures
  • Create GUIDs for Windows and .NET

Private by design

The UUID Generator runs entirely in your browser. Your text and files are never uploaded or stored on a server, so it is safe for work documents and personal information. It is free, with no sign-up and no limits on how often you use it.

Frequently asked questions

What is the difference between v4 and v7?

v4 is fully random. v7 starts with a timestamp, so IDs sort in creation order, which suits database indexes.

Is a UUID the same as a GUID?

Yes. GUID is Microsoft's name for the same 128-bit identifier.

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