Barcode Generator (EAN-13 / UPC-A)

Type 12 or 13 digits, get a real scannable barcode with the check digit calculated automatically.

About this tool

EAN-13 is the barcode on nearly every retail product. UPC-A (12 digits) is EAN-13 with an implied leading zero. The last digit is a calculated check digit.

How the encoding works

Each digit becomes a 7-module bar pattern (L or G for the first 6, R for the last 6), framed by guard bars. Nothing is uploaded.