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DPI Formula:
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DPI (Dots Per Inch) is a measurement of screen density that indicates how many pixels are displayed per inch of screen space. Higher DPI values mean sharper, more detailed images and text on displays.
The calculator uses the DPI formula:
Where:
Explanation: The formula calculates the pixel density by finding the diagonal pixel count using the Pythagorean theorem, then dividing by the physical screen size.
Details: Understanding screen DPI is crucial for graphic design, web development, and ensuring proper display quality. Higher DPI screens provide sharper images but may require content scaling for optimal viewing.
Tips: Enter the horizontal and vertical resolution in pixels, and the diagonal screen size in inches. All values must be positive numbers.
Q1: What is a good DPI for a computer monitor?
A: Standard monitors typically range from 90-110 DPI, while high-resolution displays can reach 200-400+ DPI. For most users, 100-150 DPI provides a good balance of sharpness and compatibility.
Q2: How does DPI relate to PPI?
A: While DPI (dots per inch) traditionally refers to print resolution, it's commonly used interchangeably with PPI (pixels per inch) when discussing screen density.
Q3: Why does my high-DPI screen make everything look small?
A: High DPI screens pack more pixels into the same physical space. Operating systems use scaling to make interface elements appropriately sized for viewing.
Q4: Does DPI affect gaming performance?
A: Higher DPI screens require more GPU power to render games at native resolution, which can impact performance if the hardware isn't sufficient.
Q5: Can I change my screen's DPI?
A: The physical DPI is fixed by the screen's specifications, but you can adjust scaling in your operating system to change how content is displayed.