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Use our check digit calculator below to calculate a check digit. What is a check digit? The last digit of all fixed-length, numeric GS1 Identification Keys is a check digit that ensures the integrity of the key. All GS1 ID Keys need a check digit, except Component/Part Identifier (CPID) and Global Individual Asset Identifier (GIAI).
The check digit is the last barcode number that makes sure the barcode is correctly composed. Find out here how to calculate your check digit manually.
This Fact Sheet provides a detailed explanation of how to calculate the Check Digits for the diferent length GS1 Identification Numbers. Note: The Check Digit for a Zero Suppressed GTIN-12 (encoded in a UPC-Ebarcode) is calculated using the first eleven digits of the GTIN-12 in its expanded form.
Suppose you want to find the Check Digit for the GTIN-12 (U.P.C.) Number 61414121022. Set up a table with 12 columns, and put the number 61414121022 into Positions One through Eleven. Position Twelve will be blank because it is reserved for the Check Digit.
The calculation is used to create the check digit for all the GS1 Identification Keys that require them, including GTINs and GLNs. Let’s take the GTIN 501234567890C, where C is the check digit. This is how you calculate it: 1 Starting with the right hand digit of the number, add all the alternate digit values 2 Multiply the result of step 1 ...
The following calculation can be used to create the check digit for all the GS1 Identification Keys that require them, including GTINs and GLNs. Let’s take the GTIN 501234567890C as an example, where C is the check digit.
A check digit is a calculated one-digit number used to ensure data integrity. The check digit is the last digit of a barcode number. Enter your ID Number (refer to the next page for ID Number description). 2 Press Calculate. 3 Check Digit will display. 4 Press clear to calculate another ID Number.
