UUID Generator

What is a UUID?

A UUID (Universally Unique Identifier), also known as GUID (Globally Unique Identifier), is a 128-bit identifier that is unique across all devices and time. UUIDs are commonly used in databases, distributed systems, and APIs to identify resources without coordination.

UUID v4 Format

This tool generates UUID version 4, which uses random numbers. The format is:

Where 4 indicates version 4, and y is one of 8, 9, A, or B (variant indicator).

Common Use Cases

• Database primary keys
• Session identifiers
• API request tracking
• File naming
• Distributed system coordination