PPI Calculator
Calculate the Pixels Per Inch (PPI) and Pixel Pitch of any screen based on resolution and size.
How to Calculate & Use the PPI Calculator
Calculate your screen's pixel density with our free PPI calculator. Input the horizontal and vertical resolution (in pixels) and the diagonal physical screen size (in inches) to determine the Pixels Per Inch (PPI) and pixel pitch of any monitor, phone, or television.
Input & Variable Breakdown:
- Width (pixels): Bounded variable used in the formulas.
- Height (pixels): Bounded variable used in the formulas.
- Screen Diagonal (inches): Bounded variable used in the formulas.
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Frequently Asked Questions
To calculate PPI, find the diagonal resolution in pixels using the Pythagorean theorem, then divide by the physical diagonal screen size in inches: dp = sqrt(w^2 + h^2) and PPI = dp / di.
PPI (Pixels Per Inch) refers to the density of pixels on a digital display. DPI (Dots Per Inch) refers to the density of ink dots printed on a page. While often used interchangeably, they apply to different mediums.
For desktop computer monitors, a PPI of 90 to 110 is standard and provides comfortable viewing at typical desk distances. High-resolution displays often have a PPI of 140 to 160 or higher.