QR Code Minimum Size Modules Characters Scan Distance 150mm (6″) 300mm (12″) 450mm (18″) 25 26 15mm (0.6″) 30mm (1.2″) 46mm (1.8″) 30 49 18mm (0.7″) 36mm (1.4″) 55mm (2.1″) 35 72 21mm (0.8″) 42mm (1.7″) 64mm (2.5″) 40 98 24mm (0.9″) 48mm (1.9″) 73mm (2.9″) 45 125 27mm (1.1″) 54mm (2.1″) 82mm (3.2″) 50 163 30mm (1.2″) 60mm (2.4″)…