CNH Validator
Validate Brazilian driver's license (CNH) numbers using the official DETRAN algorithm. No data sent to servers.
How does CNH validation work?
The CNH number has 11 digits: 9 base digits and 2 check digits calculated by DETRAN using decreasing and increasing weighted multiplication with modulo 11. The algorithm accepts a state factor (DSC) that can be 0 or 1.
The check runs entirely in your browser.
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