Aspect Ratio Calculator
Calculate, simplify, and scale aspect ratios for screens and images.
Aspect Ratio
Your Results
Ratio
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Decimal
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Scale this aspect ratio
Enter either target width or target height.
Scaled dimensions
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Aspect ratio calculator
Calculate simplified display ratios (16:9, 4:3, 3:2) and scale dimensions while preserving proportion.
Use this for:
- resizing images for web
- video exports
- screen and device mockups
- responsive UI design
Need broader ratio tools too? Visit the Ratio Calculator hub.
Scaling formulas
Given original width w and height h:
newHeight = newWidth * h / wnewWidth = newHeight * w / h
This keeps visual proportions identical.
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