DPI calculator: Photo 8 x 10

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)
203.2 mm x 254 mm = 51612.8 mm2 (diagonal: 325.28 mm)
20.32 cm x 25.4 cm = 516.13 cm2 (diagonal: 32.53 cm)
8 inch x 10 inch = 80 inch2 (diagonal: 12.81 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)
2400 px x 3000 px = 7.2 megapixels
= aspect ratio 0.8

Some examples