Understanding Aspect Ratio

Aspect ratio describes the proportional relationship between the width and height of an image or screen. It's written as two numbers separated by a colon, such as 16:9. Understanding and calculating aspect ratios is crucial for designers, photographers, and video editors to ensure that images and videos are displayed correctly without distortion.

How to Calculate Aspect Ratio

To calculate a new dimension while maintaining the aspect ratio, you can use a simple cross-multiplication formula:

(Original Width / Original Height) = (New Width / New Height)

Our calculator automates this for you. Just enter your original dimensions (W1 and H1). Then, enter one of the new dimensions you want (either W2 or H2), and the calculator will find the corresponding dimension that preserves the original aspect ratio.

Common Aspect Ratios

• 16:9: The standard for widescreen displays, including HDTVs, computer monitors, and most online video.
• 4:3: The standard for older televisions and computer monitors.
• 1:1: The square format popular on social media platforms like Instagram.
• 3:2: Common in photography, used by many DSLR and mirrorless cameras.

Whether you're resizing a photo for a blog post, cropping a video for social media, or designing a graphic for a specific display, our Aspect Ratio Calculator makes it easy to get your dimensions right every time.