UUID Generator

What is a UUID?

A UUID (Universally Unique Identifier) is a 128-bit identifier that is practically guaranteed to be unique. Version 4 UUIDs are randomly generated, making them ideal for distributed systems.

How to Use This Tool

Specify how many UUIDs you want to generate (up to 100 at a time) and click "Generate". Each UUID follows the standard format: 8-4-4-4-12 hexadecimal digits.

UUID Versions

• Version 1: Based on timestamp and MAC address
• Version 4: Randomly generated (most common)
• Version 5: Namespace-based using SHA-1

Common Uses

UUIDs are used for database IDs, session identifiers, transaction IDs, and any application requiring unique identifiers without central coordination.

FAQ

Can UUIDs collide?
Version 4 UUIDs have 122 bits of randomness. The chance of collision is astronomically low - roughly 1 in 2.71 quintillion.