Quick conversions
1 inch = 203 dots. 4 inches = 812 dots. 6 inches = 1218 dots. 100mm is about 799 dots.
ZPL Dots Calculator for 203 DPI
203 DPI printers use about 8 dots per millimeter. This matters for ^FO, ^PW, ^LL, fonts, and barcode sizes.
203 DPI8 dpmmDots
Open dots calculator