Test UUID/GUID Generator

Q

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.


Version:

MAC Address: Used in Version 1.

Namespace: Used in Version 3 and 5.

Count:

✍: FYIcenter.com

A

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.

a8cec162-a673-4a80-9fec-fcb24d17f3ab
781102db-7850-48dd-92b5-237120c8ca32
bc62907d-be93-4680-bd83-01a17d19706d
9b7fe5cd-2dd4-451c-96e4-db9d03196e81
e5805825-e94f-4741-9ff7-fd62c59ae4a8
be08916d-4bd6-4906-9838-04b38667e2a6
2b1fbe40-8874-4c9b-878d-337ff257033b
5d5e74cd-f849-4186-aa96-71c87fb36603
e0c228b6-5d26-4c64-8bcd-a45eda835e98
464617da-6f58-4e20-8bfe-3f6e3828c87a
ccf869f5-592e-4ccc-a20e-78a584a3fd7d
77b31282-c038-4038-ac59-32ad36314b61

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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2018-10-19, 373👍, 0💬