Aspect ratio and proportions
Calculate an aspect ratio and the height for a new width.
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How to use this tool and limits
Enter the original width and height and a new width. For example, 1920 × 1080 is 16:9; a width of 1280 gives a height of 720. Use the same unit throughout.
Frequently asked questions
Are decimals supported?
Yes. Integer dimensions produce a simplified ratio; decimal ratios retain their values. Dimensions must be positive.