1. What is Image Aspect Ratio?

The aspect ratio of an image describes the proportional relationship between its width and height. It's expressed as two numbers separated by a colon (like 16:9) or as a decimal value (like 1.7778).

2. How Does the Calculator Work?

The calculator uses the simple formula:

Where:

• \( \text{Width} \) — Image width in pixels
• \( \text{Height} \) — Image height in pixels

Explanation: The calculator also simplifies the ratio to its smallest whole number terms (e.g., 1920×1080 becomes 16:9).

3. Importance of Aspect Ratio

Details: Aspect ratio is crucial for maintaining proper image proportions when resizing, ensuring compatibility with displays, and achieving desired visual effects in photography and video.

4. Using the Calculator

Tips: Enter width and height in pixels (must be positive numbers). The calculator will provide both decimal and simplified ratio formats.

5. Frequently Asked Questions (FAQ)

Q1: What are common aspect ratios?
A: Common ratios include 1:1 (square), 4:3 (standard TV), 16:9 (HD video), and 3:2 (35mm film).

Q2: How do I choose the right aspect ratio?
A: Choose based on your display medium (e.g., 16:9 for YouTube) or artistic intent (e.g., 1:1 for Instagram).

Q3: Does aspect ratio affect image quality?
A: Not directly, but cropping to fit a different ratio may remove important image content.

Q4: Can I calculate ratio from physical dimensions?
A: Yes, the formula works with any consistent units (inches, cm, etc.), though pixels are most common for digital images.

Q5: What's the difference between aspect ratio and resolution?
A: Aspect ratio describes proportions, while resolution describes total pixel count (width × height).