Calculatium

Print Resolution (DPI) Calculator

Calculate effective image resolution from pixel dimensions and print size. Check horizontal and vertical DPI before preparing a print file.

Enter your values

The starting values are editable examples. Results update when you change your inputs.

Example: 3,000
Example: 2,400
Example: 25.4
Example: 20.32

Your result

Updates as you change your values.

Enter values to calculate.

How it is calculated

DPI = pixels / (printed centimetres / 2.54). Calculate each axis separately.

Worked example

An image measuring 3,000 × 2,400 pixels printed at 25.4 × 20.32 cm has 300 DPI in both directions.

Before you calculate

Use the final printed dimensions, not a resolution number stored in the image metadata. Pixel count and physical size determine effective resolution. Check both axes when the image and print proportions differ.

Interpreting the result

DPI is a useful reference, not a universal print-quality guarantee. Viewing distance, paper, image sharpness and the printing process also matter. Different aspect ratios require cropping or stretching; this tool does not choose a crop.

Use the units shown beside each field. Monetary fields labelled EUR stay in euros; changing language does not exchange currencies. Results are estimates under the stated assumptions.