Create universally unique identifiers for databases, APIs and testing. Generate up to 1,000 at once in UUID v4 (random) or v7 (timestamp-ordered) format.
How to use the UUID Generator
- Choose the version and how many UUIDs you need.
- Pick formatting options.
- Click Generate and copy.
UUID v4 vs v7
UUID v4 is 122 bits of randomness — collisions are practically impossible. UUID v7 starts with a Unix millisecond timestamp, so values sort by creation time, which makes them better as database primary keys.
Frequently asked questions
Is a GUID the same as a UUID?
Yes. GUID is Microsoft's name for the same 128-bit identifier.
Are these UUIDs unique?
They use your browser's cryptographically secure random generator, so the chance of a duplicate is negligible.