EAN-13 Barcode Check Digit Calculator
The last digit of EAN-13 barcodes is a check digit. The check digit is used to detect errors mostly caused by human transcription.
The red mark below shows the check digit of EAN 13 barcode:
Check Digit Formula
To compute the check digit follow the simple rules:
- Sum all the digits in even positions and multiply by 3;
- Add all the the digits in odd positions (except for the last one which is check digit) to the number you've got;
- Divide that number by 10 and take the reminder;
- If the reminder is not 0, subtract it from 10.
- Job done!
Check Digit Calculator
To save time on doing the math, simply enter the barcode numbers into the field below and we'll do the job for you:
Here goes the check digit calculation for barcode :
- The digits in even positions are: , their sum is , multiplied by 3 it is ;
- The digits in odd positions (except the last one) are: , their sum is , added to the number above it is ;
- Dividing by 10 gives us as a reminder;
- It is not zero, so subtracting it from 10 to get the check digit: .
- It is zero, so just using it as is.
The check digit is ""
If you work with barcodes, have a look at our barcode generator which will save you much more time than this calculator.