# 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:

1. Sum all the digits in even positions and multiply by 3;
2. Add all the the digits in odd positions (except for the last one which is check digit) to the number you've got;
3. Divide that number by 10 and take the reminder;
4. If the reminder is not 0, subtract it from 10.
5. 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 :

1. The digits in even positions are: , their sum is , multiplied by 3 it is ;
2. The digits in odd positions (except the last one) are: , their sum is , added to the number above it is ;
3. Dividing by 10 gives us as a reminder;
4. It is not zero, so subtracting it from 10 to get the check digit: .
5. 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.

## Other Barcode Formats

Here you can find other barcode formats supported by Barcode Generator: