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Specializing in EDI and vendor compliance for manufacturers, distributors, &  retailers.

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Online Check Digit Calculator

A barcode's check digit is typically the right-most digit in a barcode made up of all numbers, such as the UPC.  The check digit is calculated based upon the other numbers in a barcode.  Different barcodes, (i.e. UPC, SCC-14, UCC-128, etc.) have different check digit calculations.

The Uniform Code Council (now called GS1) offers a great check digit calculator on their web site.  The link is: