The last digit of a barcode number is a calculated check digit. The check digit is calculated from all the other numbers in the barcode and helps to confirm the integrity of your barcode number.
Simply enter the ID Number below and the Check Digit Calculator will calculate the last digit for you.
You may also use our online barcode creation tool, GS1 US Data Hub | Create/Manage. It calculates the check digit automatically.
To learn more about how to use the Check Digit Calculator, please visit the GS1 US Help Center.
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