Image Print DPI Calculator

Enter the actual decoded pixel dimensions of the image, rather than a nominal DPI number stored in its metadata. Pixel count is what limits available print detail.

Print dimensions define how far those pixels will be spread on paper. Dividing pixels by physical inches gives the effective dots-per-inch estimate for each axis.

Horizontal and vertical values differ when the requested print ratio differs from the image ratio. Filling that rectangle would require cropping, margins or distortion.

Upscaling can create more interpolated pixels but does not recover original optical detail. Use this calculation to choose a realistic print size for the source photograph.