Frequently Asked Questions About UUID
What is a UUID?
UUID is an acronym for 'Universally Unique Identifier'. It is a 128-bit integer number used to identify resources. The term GUID is generally used by developers working with Microsoft technologies, while UUID is used everywhere else.
How unique is a GUID?
128-bits is big enough and the generation algorithm is unique enough that if 1,000,000,000 GUIDs per second were generated for 1 year the probability of a duplicate would be only 50%. Or if every human on Earth generated 600,000,000 GUIDs there would only be a 50% probability of a duplicate.
Why use an online UUID generator?
Most programming languages have a simple way to generate UUIDs. But, sometimes you might just need a single UUID and do not want to write any code.