UUID Generator
Generate version 4 UUIDs (Universally Unique Identifiers) instantly. Generate up to 20 at once and copy with one click.
Click "Generate" to create UUIDs.
Frequently Asked Questions
What is a UUID?
A UUID (Universally Unique Identifier) is a 128-bit label used to uniquely identify objects in software systems. Version 4 UUIDs are randomly generated.
Are the UUIDs truly unique?
UUID v4 uses random numbers, making collisions astronomically unlikely — there are 2¹²² possible v4 UUIDs.
What are UUIDs used for?
UUIDs are used as primary keys in databases, identifiers in APIs, filenames, and anywhere a unique, collision-resistant ID is needed.