PPI & Screen Resolution Calculator
PPI & Screen Resolution Calculator computes PPI, dot pitch and total pixels from diagonal size and resolution. Includes presets for common displays.
Last updated: July 2026
A PPI calculator works out pixel density from diagonal size and resolution. Enter display size and pixel dimensions — it calculates PPI, dot pitch and aspect ratio.
How to use PPI & Screen Resolution Calculator
- Choose a preset or enter custom screen diagonal and resolution.
- Read the PPI, dot pitch, aspect ratio and megapixels.
- Use results for design or display comparisons.
Frequently asked questions
What is a good PPI?
Desktop monitors: 90–110 PPI. Phones: 300–400+ PPI. Higher means sharper text and images.
Is my data stored?
No — all calculations run in your browser.
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