Screen PPI / Pixel Density Calculator
Calculate a screen's pixel density (PPI) from resolution and diagonal.
px
px
inch
Result
91,7878 PPI
Pixel density: 91,7878 PPI
Result in all units
Step-by-step solution
PPI = √(w²+h²)/diagonal
What Is Screen PPI?
PPI (pixels per inch) indicates a screen's pixel density and sharpness. At the same resolution, the smaller the screen, the higher the PPI and the sharper the image.
How is it calculated?
How Is It Calculated?
PPI = √(width² + height²) ÷ diagonal (inch)
- Enter the resolution and screen diagonal.
- For example, a 24-inch Full HD ≈ 92 PPI.
Frequently Asked Questions
Why is a phone's PPI higher than a monitor's?
Because a phone screen is much smaller, the same resolution fits into a smaller area and the density increases.