UUID Generator
Generate random UUID v4 identifiers instantly.
dd728106-7296-46c7-9ee8-cd97da4a535e
957f5382-489a-4cc1-9689-7dd953f5ce43
faeacc75-5ac0-48aa-a6c4-a497429134e6
b98c5bee-f45a-4ddf-b6c3-6b1556598dcf
3683c641-985e-4f35-99a0-07f3275874e9
Frequently Asked Questions
What is a UUID?
A UUID (Universally Unique Identifier) is a 128-bit identifier formatted as 32 hex digits in groups: xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx. Version 4 UUIDs are randomly generated.
How unique is a UUID v4?
The probability of generating two identical UUIDs is astronomically small — roughly 1 in 5.3 × 10³⁶. You can safely treat them as unique.
What is the difference between UUID and GUID?
GUID (Globally Unique Identifier) is Microsoft's term for UUID. They are effectively the same thing.