What is an aspect ratio?

Aspect ratio is the proportional relationship between the width and height of an image or video.

How do I calculate a new dimension maintaining aspect ratio?

Enter your original width and height, then enter either the new width or height. The other dimension will be calculated automatically.

Calculate aspect ratios for images and video, resize with proportions, and find common social media sizes.

Calculator

Enter ratio or dimensions

Ratio (W : H)

Dimensions (W × H)

Visual Preview

16:9

Presets

Common Ratios

Social Media Sizes

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