1. What is a Pixel Aspect Ratio Calculator?

Definition: This calculator determines the aspect ratio between width and height in pixels, providing both decimal and simplified ratio formats.

Purpose: It helps designers, photographers, and developers maintain proper proportions in digital media and responsive designs.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• Ratio — The aspect ratio (unitless)
• Width — Image width in pixels
• Height — Image height in pixels

Explanation: The calculator also simplifies the ratio by dividing both dimensions by their greatest common divisor (GCD).

3. Importance of Aspect Ratio Calculation

Details: Correct aspect ratios ensure images and videos display properly without distortion across different devices and platforms.

4. Using the Calculator

Tips: Enter the width and height in pixels (must be positive integers). The calculator provides both decimal and simplified ratio formats.

5. Frequently Asked Questions (FAQ)

Q1: What is a common aspect ratio?
A: Common ratios include 16:9 (widescreen), 4:3 (standard), 1:1 (square), and 21:9 (ultrawide).

Q2: Why does my ratio simplify to unusual numbers?
A: This occurs when width and height have no common divisors (e.g., 1920×1080 simplifies to 16:9, but 1918×1078 might simplify to 959:539).

Q3: How is this different from display aspect ratio?
A: Pixel aspect ratio refers to the image dimensions, while display aspect ratio refers to how pixels are physically displayed (usually 1:1 in modern displays).

Q4: Should I use decimal or simplified ratio?
A: Simplified ratios are better for communication, while decimal values are useful for calculations.

Q5: How do I maintain aspect ratio when resizing?
A: Multiply your target dimension (width or height) by the ratio. For 16:9, height = width × 9/16, or width = height × 16/9.