1. What is PPI (Pixels Per Inch)?

Definition: PPI measures the pixel density of a digital display, indicating how many pixels fit into one linear inch of screen space.

Purpose: It helps determine screen clarity and sharpness - higher PPI means crisper images and text.

2. How Does the PPI Calculator Work?

The calculator uses the formula:

Where:

• \( \text{PPI} \) — Pixel density (pixels per inch)
• \( \text{Width} \) — Horizontal resolution in pixels
• \( \text{Height} \) — Vertical resolution in pixels
• \( \text{Diagonal} \) — Screen size in inches (measured diagonally)

Explanation: The formula calculates the diagonal resolution in pixels and divides by the physical screen size.

3. Importance of PPI Calculation

Details: Understanding PPI helps when comparing displays, choosing appropriate screen sizes, and ensuring optimal viewing experiences.

4. Using the Calculator

Tips: Enter the screen resolution (width and height in pixels) and the diagonal screen size in inches. All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What's a good PPI for a smartphone?
A: Modern smartphones typically have 300-500 PPI for sharp displays.

Q2: How does PPI differ from DPI?
A: PPI refers to screen pixel density, while DPI (dots per inch) refers to printer resolution.

Q3: Does higher PPI always mean better quality?
A: While higher PPI means sharper images, there's a point of diminishing returns based on viewing distance.

Q4: How do I find my screen resolution?
A: On Windows: Right-click desktop > Display settings. On Mac: Apple menu > About This Mac > Displays.

Q5: What's the PPI of a 24" 1080p monitor?
A: Approximately 92 PPI (1920x1080 resolution on 24" diagonal).