UUID Generator

Generator Options

UUID Version

Version 4 (Random)

Version 1 (Time-based)

Version 3 (MD5)

Version 5 (SHA-1)

Number of UUIDs to generate

Namespace (for v3 and v5)

Name (for v3 and v5)

UUID (Universally Unique Identifier) is a 128-bit number used to identify information in computer systems.
Version 4 (Random): Generated using random or pseudo-random numbers. Most commonly used.
Version 1 (Time-based): Generated using the current timestamp and MAC address (or random node).
Version 3 (MD5): Generated by hashing a namespace and name using MD5. Deterministic - same input produces same UUID.
Version 5 (SHA-1): Generated by hashing a namespace and name using SHA-1. Also deterministic.
UUIDs are typically represented as 32 hexadecimal digits, displayed in five groups separated by hyphens.
This tool works entirely in your browser - your data never leaves your computer.
For v3 and v5 UUIDs, you need to provide both a namespace UUID and a name string.