1. What is Aspect Ratio?

The aspect ratio of an image or screen is the proportional relationship between its width and height. It's expressed as two numbers separated by a colon (e.g., 16:9). Aspect ratios are used in photography, film, television, and computer displays.

2. How Does the Calculator Work?

The calculator uses the simple formula:

Where:

• Width — The horizontal measurement in pixels, meters, or any unit
• Height — The vertical measurement in the same unit as width

Explanation: The calculator provides both the decimal ratio and simplified whole number ratio (like 16:9).

3. Common Aspect Ratios

Standard Ratios:

• 1:1 - Square (common in social media)
• 4:3 - Traditional TV and computer monitors
• 16:9 - Widescreen TV and computer displays
• 21:9 - Ultra-widescreen cinema format
• 3:2 - 35mm film and many DSLR cameras

4. Using the Calculator

Tips: Enter width and height in the same units (both in pixels or both in meters). The calculator works with any positive numbers greater than zero.

5. Frequently Asked Questions (FAQ)

Q1: Why is aspect ratio important?
A: It determines how content fits on screens, affects composition in photography/film, and ensures proper scaling of images.

Q2: How do I choose an aspect ratio?
A: Depends on your medium - use 16:9 for YouTube, 1:1 for Instagram posts, 4:5 for Instagram portraits, etc.

Q3: What's the difference between aspect ratio and resolution?
A: Resolution is the total number of pixels (e.g., 1920×1080), while aspect ratio is the ratio between width and height pixels (16:9 in this case).

Q4: Can I change aspect ratio after taking a photo?
A: Yes, but it will require cropping which removes parts of the image. Best to shoot in your desired aspect ratio.

Q5: What's the aspect ratio of A4 paper?
A: Approximately 1.414:1 (√2:1), which is the standard for ISO paper sizes.