UUID Generator
Generate up to 100 UUID v4 identifiers at once. They are created on your device with the browser's cryptographic randomness and never leave it.
How to use
- Set the count and options (uppercase, remove hyphens).
- Press "Generate" to create UUID v4 values.
- Grab the results with "Copy all".
Frequently asked questions
What is UUID v4?
A 128-bit unique identifier made from random numbers. Collision odds are effectively zero, so it is widely used for database keys, file names and session IDs.
Are generated UUIDs sent to a server?
No. They are generated on your device with the browser's crypto API and never sent anywhere.
Is it really unique?
UUID v4 has 122 bits of randomness, so even billions of them have a negligible chance of collision.