1. What is a Pixels per Square Inch Calculator?

Definition: This calculator determines the pixel density (pixels per square inch) based on total pixels and display area in square feet.

Purpose: It helps designers, photographers, and display manufacturers understand pixel density for various screen sizes and resolutions.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( PPI² \) — Pixels per square inch
• \( P \) — Total pixels (width × height)
• \( A \) — Area in square feet
• \( 144 \) — Conversion factor (square inches per square foot)

Explanation: The total pixels are divided by the area converted to square inches to get pixel density.

3. Importance of Pixel Density Calculation

Details: Pixel density affects image sharpness and viewing experience. Higher PPI² means sharper images but may require more processing power.

4. Using the Calculator

Tips: Enter the total pixel count (e.g., 1920×1080 = 2,073,600 pixels) and display area in square feet. Both values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What's a good PPI² value for displays?
A: For TVs, 50-100 PPI² is common. For smartphones, 300+ PPI² is typical. For print, 300 PPI² is standard.

Q2: How do I find total pixels?
A: Multiply the horizontal resolution by vertical resolution (e.g., 1920 × 1080 = 2,073,600 pixels).

Q3: Why convert from square feet to square inches?
A: PPI² is traditionally measured per square inch, while display sizes are often given in square feet.

Q4: Does this work for non-rectangular displays?
A: Yes, as long as you know the total pixel count and total display area.

Q5: How does PPI² relate to viewing distance?
A: Higher PPI² allows closer viewing without seeing individual pixels. Lower PPI² displays need greater viewing distances.