Updated: 11/12/2023 by Computer Hope

Short for globally unique identifier, GUID is also called a UUID (universally unique identifier) and is a unique 128-bit identification value. Below is an example of a GUID.


In the example above, the timestamp of Monday, July 25, 2005 3:59:05 A.M. MDT is encoded into the UUID.

Where is a GUID used?

A GUID or UUID is used anywhere a unique method of identification is required. Below are examples of where these might be used.

Where can I creat a GUID?

Below are websites that can create a unique GUID. Programming languages also have generator classes, libraries, or modules that help generate these identifiers.

CLSID, Computer acronyms, DCE, Operating system terms, URN