Free Online UUID Generator
Generate universally unique identifiers (UUID v4) with a single click. Perfect for database primary keys, API identifiers, and tracking IDs.
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How to Use the UUID Generator
1
Click Generate to create a new UUID.
2
Set the quantity to generate multiple UUIDs at once.
3
Click Copy to copy to your clipboard.
Frequently Asked Questions
What is a UUID?
A UUID (Universally Unique Identifier) is a 128-bit identifier that is practically guaranteed to be unique. The v4 format uses random numbers.
Are UUIDs truly unique?
UUID v4 uses 122 random bits, making collisions astronomically unlikely. You can safely use them as unique identifiers.
What format are the UUIDs?
Standard UUID v4 format: xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx where x is a random hex digit and y is one of 8, 9, a, or b.