UPC-A, as well as its variations like UPC-E, EAN-13, EAN-8 and Bookland, is the most widely used bar code symbology in retail business. UPCA encodes 11 digits of numeric data plus a check digit. It can be considered to be a subset of EAN13 with the first number system digit set to zero.

When you use Barcodesoft UPCEAN font to print bar code, checksum calculation utility is provided in multiple programming languages.

There are 6 fonts contained in the package as listed below, marked by different trailing aspect ratio indicators. They are available in both true type and PostScript formats.

Aspect Ratio	Font Typeface
XS	UPCEANXS
S	UPCEANS
M	UPCEANM
L	UPCEANL
XL	UPCEANXL
XXL	UPCEANXXL