An ID is a label
A UUID is a standardized identifier that lets records have labels without a shared counter. Choose a version and quantity, then copy the list or download it as text. Each line is one ID.
Version 4 or version 7
The layouts follow RFC 9562. Version 4 uses secure random bytes with fixed version and variant bits. Version 7 adds the device’s current Unix timestamp in milliseconds and uses random bits for the remaining variable portion. A wrong device clock therefore affects its timestamp.
No input or generated ID is stored by this page. Up to 1,000 IDs can be made in one batch. For timestamp values themselves, use the Unix timestamp converter.
FAQs
Which version should I choose?
Version 4 uses random bits. Version 7 combines a creation time with random bits, which can be useful for time-ordered records. Use the version your application expects.
Are UUIDs guaranteed never to collide?
No finite random identifier format gives that absolute guarantee. This tool removes duplicates within the generated batch; your application should still enforce its own uniqueness rules.
Can a UUID be used as a password?
No. UUIDs are identifiers, and version 7 exposes a timestamp. Use a password generator for account secrets.
Are version 7 IDs strictly ordered?
Their timestamp portion sorts by creation millisecond. IDs made in the same millisecond use random ordering here; this tool does not add a monotonic sequence counter.
