Barcode Check Digit Calculator



Calculate GTIN (EAN/UPC) check digit by entering all the numbers that appear under the barcode.

Example: 075678164125 | 6001240720288


Barcode number 123456789128 has a correct check digit.

Check Digit Calculation

Position: 1 2 3 4 5 6 7 8 9 10 11 12
Digits: 1 2 3 4 5 6 7 8 9 1 2 8
Mutiply digits by: 3 1 3 1 3 1 3 1 3 1 3
= 3 2 9 4 15 6 21 8 27 1 6
Calculate total sum: 102
Calculate modulo 10: Subtract the sum from nearest equal or higher multiple of ten
=> 110 - 102 = 8 (check digit)
Correct Number: 1 2 3 4 5 6 7 8 9 1 2 8

Remarks:

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