Generate one or many RFC-4122 v4 UUIDs with a single click, fully client-side using the browser's crypto API.
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Generate one or many RFC-4122 v4 UUIDs with a single click, fully client-side using the browser's crypto API. Common questions — like what's the chance of a uuid collision — are answered in the FAQ below.
Add your input to the workspace above, review the result, then copy or download it when it's ready. No account or installation is required.
UUID Generator runs in your browser, so the information you enter stays on your device instead of being uploaded to a server.
A few worked examples so you know what to expect before you paste in your own input.
Input
(no input — click generate)
Output
3fa85f64-5717-4562-b3fc-2c963f66afa6
Output shown is illustrative — this tool generates a new random result every time.
Input
Count: 5
Output
f47ac10b-58cc-4372-a567-0e02b2c3d479 9b2e6f1a-7c9d-4e3f-8a1b-2d3e4f5a6b7c (3 more, each unique)
Output shown is illustrative — this tool generates a new random result every time.
Input
(no input)
Output
Always 36 characters: 8-4-4-4-12 hex digits separated by hyphens, e.g. xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx
UUID, NanoID, and ULID compared: length, sortability, and database index performance. Includes when to use each and a quick decision guide.
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