Work out the effective DPI when printing pixel files at a chosen size.
Each axis divides its pixel count by the matching print dimension, and the diagonal value combines both to give one density figure. Aiming for about 300 DPI keeps prints sharp; the effective DPI makes it easy to judge any pixel-to-paper combination.
DPI Checker
DPI = pixels / print size (in), per axis and diagonally
DPI = pixels / print size (in), per axis and diagonally Each axis divides its pixel count by the matching print dimension, and the diagonal value combines both to give one density figure.
Aiming for about 300 DPI keeps prints sharp; the effective DPI makes it easy to judge any pixel-to-paper combination.
This calculator takes 4 inputs: Width, Height, Print width, Print height. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.