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What is the Check Digit?

The last digit of a GTIN (barcode number) is a calculated check digit and ensures the integrity of your GTIN. 

How do I calculate the Check Digit?

There are two ways you can calculate the Check Digit:

- Use GS1 global website's Check Digit Calculator

or

- Login to MyGS1 and use ProductVault

ProductVault will automatically calculate the Check Digit for you. 

If you wish to calculate Check Digits for multiple GTINs please contact GS1 by emailing support@gs1nz.org. 

 Version 1.3 – Updated 05 Feb 2020

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