MOSAQO TOOL
QR code size calculator
Enter how far away the code will be read from and how long its destination is. The minimum is the smallest size that works; the recommendation adds the margin that bad light, old phones and awkward materials take away.
Minimum
3 cm
Print this
3.9 cm
25×25 modules · 1.56 mm per module · 7 mm quiet zone on each side
A tenth of the reading distance, or the width the module count needs at half a millimetre per module — whichever is larger.