Barcode Forums by Morovia

Posted: **Thu Dec 04, 2003 9:03 pm**

When Check Digit = 10

Do I use :, or X, or 0 ????

Posted: **Fri Dec 05, 2003 10:27 am**

A UPC-A checksum digit can only between 0-9.

The article about UPC-A check digit calculation can be found here:

http://www.morovia.com/education/symbology/upc-a.asp

There is a web page to calculate UPC check digit in the learning center:

http://www.morovia.com/education/utility/upc-ean.asp

An ISBN number can have a checksum digit 10 which uses X to represent it.

UPC-A Check Sum