Generates version 4 (random) UUIDs, entirely in your browser.
Generate UUIDs Instantly
Create random version 4 UUIDs (universally unique identifiers) for use in code, databases, or test data. Generate one at a time or up to 50 at once, then copy them individually or all together. Everything is generated locally in your browser.
🆔 Great For
- Generating unique IDs for database records or test fixtures
- Creating unique keys for API requests or session tokens
- Quickly grabbing several UUIDs at once for seed data
- Naming temporary files or resources uniquely
📋 How to Use
- Set how many UUIDs you need (1 to 50)
- Press "Generate"
- Copy a single UUID, or press "Copy all"
Frequently Asked Questions
What is a UUID v4?
A UUID (universally unique identifier) is a 128-bit value used to uniquely identify information. Version 4 UUIDs are generated using random numbers, making collisions astronomically unlikely.
Are these UUIDs guaranteed to be unique?
Each UUID v4 is generated from 122 random bits, so the chance of a collision is negligible for virtually any practical use. They're not cryptographically guaranteed unique, but collisions are not a realistic concern.
Is anything sent to a server?
No. UUIDs are generated locally using your browser's built-in random number generator, and nothing is sent anywhere.