1. What is Image Size Ratio?

The Image Size Ratio (ISR), also known as aspect ratio, is the proportional relationship between the width and height of an image. It is expressed as two numbers separated by a colon (e.g., 16:9) or as a decimal value.

2. How Does the Calculator Work?

The calculator uses the simple formula:

Where:

• \( W \) — Width of the image in pixels
• \( H \) — Height of the image in pixels

Explanation: The ratio represents how many times the width fits into the height, providing a standardized way to describe image proportions.

3. Importance of Aspect Ratio Calculation

Details: Aspect ratio is crucial for maintaining proper image proportions in various applications including web design, photography, video production, and graphic design. It ensures images display correctly without distortion across different devices and platforms.

4. Using the Calculator

Tips: Enter the width and height values in pixels. Both values must be positive numbers greater than zero. The calculator will compute the aspect ratio as a decimal value.

5. Frequently Asked Questions (FAQ)

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

Q2: How do I convert decimal ratio to colon format?
A: Multiply the decimal by a common denominator to find the nearest whole number ratio (e.g., 1.777 ≈ 16/9 = 16:9).

Q3: Why is aspect ratio important in responsive design?
A: It helps maintain image proportions when resizing for different screen sizes, preventing distortion and cropping issues.

Q4: Can I use this calculator for video resolutions?
A: Yes, the same formula applies to video resolutions and any rectangular dimensions.

Q5: What if my image has non-integer dimensions?
A: The calculator accepts decimal values, making it suitable for any precise dimension calculations.