Aspect Ratio Calculator
Calculate and convert aspect ratios for images and videos. Resize dimensions while maintaining proportions.
Width
Height
New Width
New Height
Enter one value to calculate the other
Aspect Ratio
16:9
1.7778 (177.78%)
16:9
Common Uses
16:9 - YouTube, TV
9:16 - Mobile, Stories
1:1 - Instagram, Profile
Why use an aspect ratio calculator?
Maintain correct proportions when resizing images and videos. Avoid stretching or distortion by calculating exact dimensions for any target aspect ratio.
Frequently Asked Questions
What is aspect ratio?
Aspect ratio is the proportional relationship between width and height. It's expressed as two numbers separated by a colon (e.g., 16:9, 4:3).
What's the most common aspect ratio?
16:9 is the most common for video and modern displays. 4:3 was standard for older TVs. 1:1 is popular for social media.
How do I resize without losing quality?
Always resize to smaller dimensions, not larger. Use the same aspect ratio to avoid distortion. Save in a high-quality format.