Pixels (px) are the smallest addressable elements in digital imaging, while inches (in) are a physical unit of measurement. The relationship between pixels and inches depends on the screen's resolution, typically measured in PPI (Pixels Per Inch).
Standard screen resolutions commonly use 96 PPI on Windows and 72 PPI on Mac, meaning:
| Inches | Pixels (96 PPI) | Pixels (72 PPI) |
|---|---|---|
| 0.5 | 48 | 36 |
| 1.0 | 96 | 72 |
| 1.5 | 144 | 108 |
| 2.0 | 192 | 144 |
| 2.5 | 240 | 180 |
To convert pixels to inches, use the following formula:
Inches = Pixels ÷ PPI (Pixels Per Inch)
Example: 192 pixels ÷ 96 PPI = 2 inches
To convert inches to pixels, use this formula:
Pixels = Inches × PPI (Pixels Per Inch)
Example: 2 inches × 96 PPI = 192 pixels
Understanding pixel to inch conversion is crucial for: