UUID Generator

Generate UUID v4 instantly. UUIDs are random, globally unique identifiers commonly used in software development, databases, and APIs.

Number of UUIDs

Your UUID will appear here.

Click generate to create a UUID.

What Is a UUID?

A UUID (Universally Unique Identifier) is a 128-bit identifier designed to be unique across systems, devices, and time. UUIDs are widely used in modern software applications.

What Is UUID v4?

UUID version 4 (v4) is generated using random numbers. This randomness makes collisions extremely unlikely, even at massive scale.

How This UUID Generator Works

Choose how many UUIDs you need
Click the generate button
Copy and use your UUIDs anywhere

UUID Format

xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx

Example: 550e8400-e29b-41d4-a716-446655440000

UUID Examples

UUID v4: f47ac10b-58cc-4372-a567-0e02b2c3d479

UUID v4: 9c858901-8a57-4791-81fe-4c455b099bc9

Frequently Asked Questions

Are UUIDs really unique?

While no system can guarantee absolute uniqueness, UUID v4 collisions are astronomically unlikely.

Can I use UUIDs in databases?

Yes. UUIDs are commonly used as primary keys in databases.

Is this UUID generator secure?

Yes. All UUIDs are generated locally in your browser.

Real-Life Usage

Database primary keys
API request identifiers
User session IDs
File naming systems
Distributed systems