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Aspect Ratio Calculator

Calculate dimensions based on aspect ratio (16:9, 4:3, etc.) for images and video

Resizing images or video? Use this calculator to find the correct width or height to maintain your aspect ratio without distortion.

Calculator Inputs

Leave empty if solving for Width

Leave empty if solving for Height

Results

Enter values above to see your results

How It Works

Aspect ratio is the proportional relationship between width and height. (Width / Height = Ratio). We use cross-multiplication to solve for the missing dimension.

Tips & Best Practices

  • Common ratios: 16:9 (HD Video), 4:3 (Standard TV/Photo), 1:1 (Square/Instagram), 9:16 (Stories).

Frequently Asked Questions

What is 1920x1080 ratio?

1920x1080 is a 16:9 aspect ratio, the standard for High Definition (HD) video.