Select the barcode format and enter every digit except the final check digit.
Enter every digit except the final check digit. The GS1 algorithm works from right to left, alternately multiplies digits by three and one, adds the results, and selects the digit needed to reach the next multiple of ten.
Use it when creating a new number from an authorised number range, correcting a spreadsheet export, or completing a barcode label before print. Select the format first because GTIN-8, GTIN-12, GTIN-13, and GTIN-14 use different body lengths.
A calculated final digit makes a number mathematically complete. It does not issue a GS1 number or confirm that a product, company, or marketplace has accepted it.
It calculates check digits for GTIN-8, UPC-A / GTIN-12, EAN-13 / GTIN-13, and GTIN-14.
No. Enter the number without its final digit; the calculator adds the correct final digit.