Screens & print calculators

Relate image dimensions, aspect ratio and physical print size.

Choose the right calculation

Pixel dimensions do not imply a physical width until a pixel density is chosen. Aspect ratio describes shape, not total resolution. Printer hardware DPI and image sampling PPI are related but distinct concepts.

Find a tool for your question

Computing & digital↗

Aspect Ratio Calculator

Calculate width-to-height ratio as a decimal.

Computing & digital↗

Aspect Ratio Height Calculator

Find a proportional height for a chosen width and target aspect ratio.

Computing & digital↗

Image Print Width Calculator

Find physical print width from horizontal pixels and pixels per inch.

Computing & digital↗

Megapixel Calculator

Find total pixel count in megapixels from image dimensions.

Does changing PPI create extra image detail?

Changing metadata alone does not create new original image samples. Resampling changes the pixel grid but cannot recover detail that was never captured.