Screen PPI & Display Pixel Density Calculator
Calculate Pixels Per Inch (PPI), total resolution, and aspect ratio of screens.
Tool inputs stay in your browser · optional AI search sends your query
Good to know: Computes pixel density per diagonal inch to determine display clarity and Retina grade sharpness.
How to use it (step by step)
- 1Fill in the boxes: “Horizontal Resolution (pixels)”, “Vertical Resolution (pixels)”, “Screen Diagonal Size (inches)”. Example numbers are already there so you can see how it works; replace them with yours.
- 2The result updates instantly as you type (on a phone it is below the boxes).
- 3The bold line is the main answer. Tap Copy next to any value to copy it.
Words to know
- Aspect ratio (9:16, 4:5…)
- The shape of an image: width compared to height. 9:16 is tall like a phone screen, 16:9 is wide like a TV, 1:1 is square.
- Resolution / pixels
- A picture is made of tiny dots called pixels. 1080×1920 means 1,080 dots wide and 1,920 tall.
- Fraction / ratio
- A fraction is a part of a whole (3/4 = three of four parts). A ratio compares two amounts (2:1 = twice as much).
- DPI / RGB / CMYK
- DPI is dots per inch for printing. RGB uses screen colors; CMYK uses printing inks. This tool exports RGB only.
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