1. What is Pixels per Square Inch Calculator for Cylinder?

Definition: This calculator determines the pixel density (PPI²) for a cylindrical display surface based on total pixels, radius, and height.

Purpose: It helps designers and engineers calculate pixel density for curved or cylindrical displays to ensure optimal image quality.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( PPI^2 \) — Pixels per square inch (pixels/in²)
• \( P \) — Total pixels (dimensionless)
• \( r \) — Radius of cylinder (inches)
• \( h \) — Height of cylinder (inches)

Explanation: The formula calculates the pixel density by dividing total pixels by the surface area of the cylinder (2πrh).

3. Importance of PPI² Calculation

Details: Proper PPI² calculation ensures appropriate image resolution for cylindrical displays, preventing pixelation or unnecessary high resolution.

4. Using the Calculator

Tips: Enter the total number of pixels, cylinder radius in inches, and cylinder height in inches. All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What's a good PPI² value for displays?
A: Typical values range from 100-300 PPI² for most viewing distances, but this depends on application and viewing distance.

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

Q3: Does this work for partial cylinders?
A: Yes, if you adjust the height parameter to represent the actual display height on the cylinder.

Q4: How does radius affect PPI²?
A: Larger radius decreases PPI² as the same number of pixels are spread over a larger surface area.

Q5: Can I use this for non-cylindrical displays?
A: No, use a standard PPI calculator for flat rectangular displays.