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Screen Size & PPI Calculator
Calculate screen dimensions, PPI (pixels per inch), and dot pitch for monitors, phones, and tablets.
PPI (Pixels Per Inch)
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Dot Pitch
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Width (cm)
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Height (cm)
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Width (inches)
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Height (inches)
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Aspect Ratio
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Pixel Size
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How to Use
Enter the diagonal screen size (inches), aspect ratio, and resolution to calculate PPI and physical dimensions.
- PPI (pixel density) calculation
- Physical screen size (cm/inch)
- Aspect ratio to dimensions
- Common resolution presets
Use cases
- Compare PPI when buying a monitor
- Find actual physical screen dimensions
- Calculate pixel density of smartphones