Check Digit Calculator

You can use this form to calculate the check digit (final digit) for a GS1 ID Key such as a barcode number (GTIN), a GLN or an SSCC. Simply enter your prefix and chosen item reference digits in the left box, click the Calculate button and your complete GS1 number will appear in the right hand box. Download a copy of the 1 page instruction sheet.

GTIN 13 Your complete number is:
GTIN 14 Your complete number is:
SSCC Your complete number is:
GTIN (UPC) 12 Your complete number is: