1. What is Pixels per Square Inch (PPI²)?

Definition: PPI² measures pixel density, representing how many pixels are packed into one square inch of display area.

Purpose: It helps compare display resolutions and understand image sharpness potential on different screens.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( PPI² \) — Pixels per square inch (pixels/in²)
• \( P \) — Total pixels (dimensionless)
• \( A \) — Area (square inches, in²)

Explanation: Total pixel count is divided by display area to determine pixel density.

3. Importance of PPI² Calculation

Details: Higher PPI² values indicate sharper displays where individual pixels are less visible to the human eye.

4. Using the Calculator

Tips: Enter total pixel count (width × height) and display area in square inches. Both values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: How do I find total pixels?
A: Multiply display width in pixels by height in pixels (e.g., 1920 × 1080 = 2,073,600 pixels).

Q2: What's a good PPI² value?
A: Smartphones typically have 300+ PPI², while computer monitors range 100-200 PPI².

Q3: Does PPI² affect image quality?
A: Higher PPI² generally means sharper images, but viewing distance also matters.

Q4: How do I measure display area?
A: Multiply screen width in inches by height in inches (diagonal measurements alone aren't sufficient).

Q5: Is PPI² the same as DPI?
A: No, DPI refers to printer dots per inch, while PPI refers to screen pixels per inch.