DPI calculator

Use this calculator to find out how many pixels (resolution) an image should have to be printed at a certain size.

Print Dimensions

Net dimensions (no bleed)
100 mm x 100 mm = 10000 mm2 (diagonal: 141.42 mm)
10 cm x 10 cm = 100 cm2 (diagonal: 14.14 cm)
3.94 inch x 3.94 inch = 15.52 inch2 (diagonal: 5.57 inch)

Print Pixel Size

Dots-per-inch
Printer resolution = 300 dpi = 118 dots/cm
Printer pitch = 85 µm / micrometer (size of 1 pixel)
Net dimensions (no bleed)
1182 px x 1182 px = 1.4 megapixels
= aspect ratio 1

Some examples