UUID Generator
Generate random UUIDs (v4) for your projects. Bulk generate up to 50 at once. Uses the browser's built-in crypto API for proper randomness.
Click Generate to create UUIDs
How to Use
- Choose your preferred options above.
- Click the generate button to create results.
- Click "Copy" to copy any result to your clipboard.
- Generate as many times as you like -- it's free.
Tips & Guide
When to Use UUIDs
UUIDs are ideal for database primary keys in distributed systems, session identifiers, file names that must be unique, and API request tracking. They eliminate the need for a centralized ID authority.
UUID Versions Explained
Version 4 (random) is the most common — 122 bits of randomness gives a collision probability near zero. Version 1 uses timestamps, Version 5 uses namespace-based hashing. For most applications, v4 is the right choice.
Frequently Asked Questions
What is a UUID?
A UUID (Universally Unique Identifier) is a 128-bit identifier that is unique across space and time. Version 4 UUIDs are randomly generated.