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Barcode checksum calculator
Generate the last barcode digit.
Calculate the final check digit for EAN-13, EAN-8, UPC-A and ITF-14 numbers. Start with the digits you have, then copy the complete code.
Checksum preview
EAN-135901234123457
Full code: 5901234123457
Enter 12 digits to calculate the final EAN-13 check digit.
Barcode type
About check digits
A checksum helps scanners catch typing and printing mistakes.
Retail and logistics barcodes often end with a calculated check digit. The digit is derived from the previous numbers, so a scanner or system can detect many common input errors before a code is accepted.
Barqode uses the standard GS1 modulo-10 weighting used by EAN-13, EAN-8, UPC-A and ITF-14. Enter the digits before the checksum, or paste a full code to verify whether the final digit is correct.