1. What is Aspect Ratio?

The aspect ratio of an image is the proportional relationship between its width and height. It's expressed as two numbers separated by a colon (e.g., 16:9). Aspect ratio is important in photography, video, and design to maintain proper proportions.

2. How Aspect Ratio is Calculated

The aspect ratio is calculated using the formula:

Where:

• Width — The horizontal dimension of the image in pixels
• Height — The vertical dimension of the image in pixels

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

3. Common Aspect Ratios

Common Ratios:

• 1:1 — Square (Instagram photos)
• 4:3 — Standard definition TV
• 16:9 — HDTV, most online video
• 3:2 — 35mm film, DSLR cameras
• 21:9 — Ultrawide cinema

4. Using the Calculator

Tips: Enter the width and height in pixels. The calculator will show both the decimal ratio and simplified ratio (e.g., 1.777... and 16:9).

5. Frequently Asked Questions (FAQ)

Q1: Why is aspect ratio important?
A: It ensures images display correctly without stretching or cropping, and maintains consistency across different devices and platforms.

Q2: How do I change an image's aspect ratio?
A: You can crop the image or add padding (letterboxing/pillarboxing) to match the desired ratio.

Q3: What's the difference between aspect ratio and resolution?
A: Aspect ratio is the proportion (16:9), while resolution is the pixel dimensions (1920×1080).

Q4: What aspect ratio is best for social media?
A: It varies by platform - Instagram prefers 1:1 or 4:5 for photos, 9:16 for stories; Twitter works well with 16:9.

Q5: Can I calculate aspect ratio from resolution?
A: Yes, that's exactly what this calculator does - it calculates the ratio from width and height in pixels.