Pixels per centimeter
42.83 PPCM
Pixel density converted to metric units.
Free display density calculator
PPI Calculator
A PPI calculator measures screen pixel density from resolution and physical display size. Use it to compare monitor, laptop, tablet, and phone sharpness before designing or buying.
Display details
The screen width in pixels
px
The screen height in pixels
px
The advertised corner-to-corner display size
in
Common display presets
Pixel density
108.79
PPI
High density
This is a crisp desktop density that balances detail with comfortable interface sizing.
Pixel pitch
0.2335 mm
Approximate physical distance between pixels.
Diagonal resolution
2,937 px
Pixel count from one display corner to the other.
Aspect ratio
16:9
The resolution reduced to its simplest ratio.
Formula: PPI = square root of (width squared + height squared), divided by diagonal inches.
How to use the PPI calculator
Step 1
Enter the screen's horizontal and vertical resolution in pixels.
Step 2
Enter the physical diagonal screen size in inches.
Step 3
Read the calculated PPI, pixel pitch, aspect ratio, and density interpretation.
Step 4
Try a preset or adjust the values to compare another display.
PPI calculator FAQ
What is a PPI calculator?
A PPI calculator finds a screen's pixel density by dividing its diagonal pixel resolution by its diagonal size in inches.
How do you calculate pixels per inch?
Find the diagonal pixel count with the Pythagorean theorem, then divide that number by the physical diagonal screen size in inches.
Is higher PPI always better?
Higher PPI usually makes text and graphics sharper, but viewing distance, operating-system scaling, performance, and cost also affect the experience.
What PPI is good for a monitor?
About 90 to 110 PPI is common for desktop monitors. Higher densities look sharper but may need display scaling for comfortable text and controls.
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