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Display resolution

Screen PPI Calculator

Calculate pixels per inch from resolution and diagonal size.

PPI is only one display attribute

Pixel density affects sharpness, but contrast, panel technology, scaling, brightness and viewing distance also shape perceived quality.

Example

A 1920 by 1080 display has a pixel diagonal of about 2,203 pixels. On a 24-inch screen, that is about 92 PPI.

How to use the result

Compare screens at the viewing distance you actually use. A phone can need much higher PPI than a desktop monitor because it is held closer.

Limitations

PPI does not measure color accuracy, refresh rate, brightness, subpixel layout, scaling quality or eye comfort.

Last reviewed: 2026-05-17

Before relying on this result

Use this calculator together with the formula, assumptions, limitations and examples on the page. If the topic involves health, tax, lending, investment, legal, safety or current-rate decisions, treat the number as an estimate and check the relevant primary source or professional guidance.

Calculator metadata last reviewed: 2026-05-14.