How to use the UUID generator
- Choose how many UUIDs you need.
- Click Generate, then copy one (tap it) or use Copy all.
What is a UUID?
A UUID (Universally Unique Identifier), also called a GUID, is a 128-bit value used to label data uniquely — database keys, file names, API records — without a central authority. Version 4 UUIDs are randomly generated, making collisions practically impossible.
Frequently asked questions
Are these truly unique?
Version 4 UUIDs are random with such a vast range that duplicates are effectively impossible.
Is it free?
Yes, completely free with no sign-up.