Dev Tools ::  Javascript Tools  RegExp Tester  Color Tools  Diff Tools  JSON Formatter  Crypto Tools  HTML Character Code  Closure Compiler  GUID Generator  Chmod Calculator  API Reference Search    My IP address,User Agent  QR Code Generator

GUID Generator Online

The number you want to create (1-200)   {} Braces Uppcase No Hyphens Generate new GUID

0018b2db-33a0-c693-11de-f05bc7d26614

What is a GUID? A Globally Unique Identifier (GUID) is a unique reference number used as an identifier in computer software. The term GUID typically refers to various implementations of the universally unique identifier (UUID) standard. GUIDs are usually stored as 128-bit values, and are commonly displayed as 32 hexadecimal digits with groups separated by hyphens, such as {21EC2020-3AEA-1069-A2DD-08002B30309D}. GUIDs generated from random numbers sometimes contain 6 fixed bits saying they are random and 122 random bits; the total number of unique such GUIDs is 2122 or 5.3×1036. This number is so large that the probability of the same number being generated randomly twice is negligible; however other GUID versions have different uniqueness properties and probabilities, ranging from guaranteed uniqueness to likely non-uniqueness. Assuming uniform probability for simplicity, the probability of one duplicate would be about 50% if every person on earth owns 600 million GUIDs.