A UUID (Universally Unique Identifier), also known as a GUID in the Microsoft ecosystem, is a 128-bit label used for information in computer systems. Our UUID Generator creates Version 4 UUIDs, which are generated completely randomly.
Yes. The total number of possible UUID v4 combinations is 2122. The probability of generating two identical UUIDs (a collision) is practically zero. You can safely use these as primary keys in databases or as unique session IDs.