Quick Answer
What is a UUID?
// Answer
A UUID (Universally Unique Identifier) is a 128-bit value, usually shown as 32 hexadecimal digits in five groups, like 3f2504e0-4f89-41d3-9a0c-0305e82c3301. Version 4 UUIDs are randomly generated, making collisions astronomically unlikely. This tool uses your browser’s secure random source.
Why use this tool
Unique IDs, instantly
UUIDs are the standard way to create unique identifiers without a central authority — ideal for database primary keys, distributed systems, request tracing, and file names. Generate as many as you need and copy them in bulk.
FAQ
Frequently asked questions
A UUID generated from random numbers. It has 122 bits of randomness, so duplicates are practically impossible.
Yes, for all practical purposes. The chance of a collision is negligible even across billions of UUIDs.
Yes. Choose a count or enter your own number to generate UUIDs in bulk.
Yes, UUIDs are generated in your browser using crypto.getRandomValues.
More tools