UPC check digit calculator

The last digit of every UPC, EAN and GTIN is a check digit calculated from the others. A wrong check digit means the code was typed or copied with an error, and marketplaces reject it.

Check a code

UPC, EAN or GTIN

Calculate the check digit

Code without the check digit: 7, 11, 12 or 13 digits

How the check digit works

Starting from the right of the code without its check digit, multiply the digits by 3 and 1 in turn and add them up. The check digit is the number that brings the sum to the next multiple of 10. The same rule works for UPC-A, EAN-13, GTIN-14 and EAN-8.