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Is that barcode number typed correctly?

A mistyped digit sends a barcode search to the wrong product, or to none. Paste a UPC, EAN or GTIN to check its last digit, or enter the digits without it to work the check digit out.

What do you want to do?

Enter all the digits, including the last one (the check digit).

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Result

Type or paste a barcode number to check it.

How the check digit works

Starting from the digit next to the check digit and moving left, multiply the digits alternately by 3 and 1 and add them up. The check digit is the number that brings the total up to the next multiple of 10. UPC-A (12 digits), EAN-13 (13 digits), EAN-8 (8 digits) and GTIN-14 all use the same rule. A UPC-A is the same as an EAN-13 with a leading zero. Short UPC-E codes are a compressed form and are not checked here.

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