Generate universally unique identifiers (UUIDs) for your applications
A UUID (Universally Unique Identifier) Generator creates unique 128-bit identifiers that are practically guaranteed to be unique across space and time. Our tool generates UUID version 4, which uses random numbers, making it ideal for distributed systems, databases, and application development where unique identifiers are required.
UUIDs are represented as 32 hexadecimal digits, displayed in five groups separated by hyphens, in the form 8-4-4-4-12 for a total of 36 characters. They are standardized by RFC 4122 and are widely used in software development.
UUID version 4 uses random numbers to generate identifiers. It's the most commonly used version because it doesn't require any input data and provides excellent uniqueness probability.
While theoretically possible to generate duplicates, the probability is extremely low (1 in 2^122). For practical purposes, UUIDs can be considered unique.
Use UUIDs when you need unique identifiers across distributed systems, for database primary keys, session IDs, file names, or any scenario where uniqueness is critical.