UUID Generator
Generate universally unique identifiers (UUIDs) for your applications, databases, and APIs. UUIDs are 128-bit values that are virtually guaranteed to be unique across space and time, making them perfect for distributed systems and database primary keys.
Generator Settings
Most common, cryptographically random
UUID Validator
FAQ
What is a UUID?
A UUID (Universally Unique Identifier) is a 128-bit number used to uniquely identify information in computer systems. The standard format is 32 hexadecimal digits displayed in five groups separated by hyphens (e.g., 550e8400-e29b-41d4-a716-446655440000).
What is the difference between UUID versions?
UUID v1 is time-based and includes the MAC address. UUID v4 is randomly generated and most commonly used. UUID v7 is time-ordered, making it ideal for database indexing while maintaining uniqueness.
Are UUIDs truly unique?
While not mathematically guaranteed to be unique, the probability of generating two identical UUIDs is so astronomically low that collisions are practically impossible in real-world applications.