How to generate UUID/GUID strings?

To help you to obtain some UUID/GUID strings for testing purpose, FYIcenter.com has designed this online tool. All you need to do is to enter the number of data items you need in the form below, and click the "Generate" button. The generated UUID/GUID strings will be presented in the result area.

Result generated by FYIcenter.com - Test UUID/GUID strings: Warning, these UUID/GUID strings are for testing purpose only. Do not use them in any production systems.

91d76f75-a1b4-4e9b-90a4-44e6153952d5
1b9d9267-93f6-4a59-a3aa-64e4e32e225b
f371b783-417f-4787-9cfc-10956af04fff
f3d78756-5248-4ddc-ac5b-8fc2e37b036d
a5c894ad-0971-4a76-97da-eaf6082af7ac
413012e8-e287-49b3-8c38-b459a7154b2d
d70d7472-40df-4044-ab6a-a07ad364bc85
fb18d51a-9f43-48b2-9b47-502cbe157803
86c4455c-1886-4cad-ae3f-4fda4dceb60d
277fffe3-ad88-489f-ae6a-a2f917d41009
c6456883-0baa-4ebb-ad81-96174ba7e326
16bbfc4a-4432-49e3-b41e-8194064efb0e

What are UUID/GUID strings?

A UUID (Universally Unique IDentifier), also called GUID (Globally Unique IDentifier), string represents a 128-bit number used to uniquely identify information in computer systems.

The UUID/GUID standard is defined in RFC 4122 and ISO/IEC 9834-8. It has 5 versions and several variations:

• Version 5 - Generated by applying the SHA1 algorithm on a given namespace identifier.
• Version 4 - Generated Randomly.
• Version 3 - Generated by applying the MD5 algorithm on a given namespace identifier.
• Version 2 - Generated by a given MAC address and modified current timestamp.
• Version 1 - Generated by a given MAC address and current timestamp.

A UUID string has 32 hexadecimal digits and is usually displayed in 5 groups in an 8-4-4-4-12 digit pattern. The 13th hexadecimal digit is used to identify the UUID version. For example, "c56a4180-65aa-42ec-a945-5fd21dec0538" is a version 4 UUID.

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