Screen DPI Calculator — PPI, Pixel Size & Display Area
Calculate your monitor's PPI, pixel pitch, and display area from diagonal size and resolution.
#1Input
Enter your monitor's diagonal size (inches) and resolution (pixels). You can also select from presets.
#2Results
Calculated PPI, pixel size, and display area based on your input.
PPI (Pixels/Inch)91.8
Pixel Size0.277 mm
Display Width20.9" / 53.1 cm
Display Height11.8" / 29.9 cm
Display Area246.1 in² / 1587.9 cm²
Aspect Ratio1.78:1
What Is PPI (DPI)?
PPI (Pixels Per Inch) measures the pixel density of a display — the number of pixels packed into one inch. Higher PPI means sharper, more detailed images. Typical desktop monitors are 90-110 PPI, while Retina displays exceed 200 PPI.