DpiCalc
Calculate print resolution

PPI = pixels ÷ print inches

Calculate effective print PPI

Compare horizontal and vertical PPI. Different values reveal an aspect-ratio mismatch between pixels and the target print box.

Private browser calculation

Choose which value is unknown

No image upload

Calculation mode

Known values

Horizontal and vertical PPI are calculated separately.

DpiCalc solves pixel arithmetic only. It does not inspect files, resample, crop, add bleed, predict perceived quality, or equate source PPI with printer hardware DPI.