UUID Generator
Generate random UUID v4 identifiers, one or many at a time.
Generate cryptographically random UUID v4 identifiers — one at a time or in a batch — using your browser's secure random number generator.
Frequently asked questions
What version of UUID does this generate?
Version 4 — randomly generated, using your browser's cryptographically secure random number generator. It's the most common type for general-purpose unique IDs.
How unlikely is a collision?
Extremely — there are 2^122 possible v4 UUIDs, so even generating billions of them, the odds of a duplicate are effectively zero.