About UUID Generator
A UUID (also called a GUID) is a 128-bit random identifier, written as 32 hex digits in five groups, like 550e8400-e29b-41d4-a716-446655440000. Because the space of possible values is astronomically large, two independently generated UUIDs will practically never collide.
Developers use UUIDs as database keys, request IDs, file names and session tokens - anywhere a unique ID is needed without a central counter. This page generates version 4 (random) UUIDs, one or fifty at a time.
How to use it
- Choose how many UUIDs you need (1 to 50).
- Press Generate.
- Copy them all with one click.
Frequently asked questions
What is a version 4 UUID?
A UUID made from random numbers, with the version digit fixed at 4. It needs no central registry and is the most common kind for app development.
Can two UUIDs ever be the same?
In theory yes, in practice no. With 122 random bits, you would need to generate billions per second for a century before a collision becomes likely.
UUID or GUID - what is the difference?
They are the same format. GUID is Microsoft's name for it; UUID is the standard name.
Is anything uploaded?
No. Generation runs entirely in your browser.