UUID Generator
Generate unique UUIDs v4 instantly
FAQ
What is UUID?
UUID (Universally Unique Identifier) is a 128-bit identifier used to uniquely identify information. Version 4 uses random numbers.
What's the difference between UUID v1 and v4?
UUID v1 uses timestamp and MAC address (can expose information). UUID v4 is completely random, being more secure and most commonly used today.
How to use UUID in databases?
UUIDs are great as primary keys in distributed systems. They avoid collisions and don't expose sequence. Use native UUID type (PostgreSQL) or CHAR(36)/BINARY(16).