How to Generate UUIDs

Select the quantity of UUIDs you need (1-100)
Choose your preferred format (standard, uppercase, no hyphens, or with braces)
Click "Generate" to create your UUIDs
Copy individual UUIDs or download all as a text file

What is a UUID?

A UUID (Universally Unique Identifier) is a 128-bit number used to uniquely identify information in computer systems. UUIDs are designed to be unique across both space and time, making collisions extremely unlikely.

Common Use Cases

Database primary keys and unique identifiers
Session tokens and tracking IDs
File or resource naming
Distributed system entity identification
API request correlation IDs
Test data generation

Frequently Asked Questions

How unique are UUIDs?

UUID v4 uses random generation. The probability of collision is so low (1 in 2^122) that it's effectively impossible in practical applications. You'd need to generate billions of UUIDs per second for many years to have even a small chance of collision.

What's the difference between UUID versions?

This tool generates UUID v4, which uses random numbers. Other versions include v1 (timestamp-based), v3/v5 (namespace-based), and the newer v6/v7 (ordered for databases). V4 is the most commonly used.

Can I use these in production?

Yes! The tool uses the browser's cryptographic random number generator (crypto.randomUUID()), which is suitable for production use.

UUID Format Options

Standard: 550e8400-e29b-41d4-a716-446655440000
Uppercase: 550E8400-E29B-41D4-A716-446655440000
No Hyphens: 550e8400e29b41d4a716446655440000
With Braces: {550e8400-e29b-41d4-a716-446655440000}

UUID Generator