UUID Generator
Generate cryptographically random UUID v4 or time-ordered UUID v7 identifiers, individually or in batches.
Processed on your device. Your files and inputs never leave your browser.
How it works
Choose UUID v4 or v7
Set how many identifiers you need and generate the batch.
Copy all UUIDs or download them as a plain text file, one per line.
UUID v4 uses random bits from the browser's cryptographic generator. UUID v7 combines a millisecond Unix timestamp with cryptographic randomness, so it sorts approximately by creation time. IDs generated within the same millisecond are not guaranteed to be in order. UUID v7 exposes the approximate time it was created. These are identifiers, not passwords or authorization secrets.
A few more useful tools
Good to know
Are generated UUIDs guaranteed unique?
Random UUID collisions are extraordinarily unlikely, but a database should still enforce a unique constraint wherever uniqueness is required.
When should I choose v7?
Use v7 when time-based locality is useful, such as some database indexes. Choose v4 when you do not want the creation timestamp embedded.