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Aspect Ratio Calculator
Find the simplified aspect ratio and decimal ratio of any width and height in pixels or units.
Simplified ratio
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Decimal ratio (width ÷ height)
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About the Aspect Ratio Calculator
Aspect ratio describes the proportional relationship between an image or screen's width and height. It's found by reducing both numbers using their greatest common factor, the same way you'd simplify a fraction.
Formula: Ratio = (Width ÷ GCD) : (Height ÷ GCD), where GCD is the greatest common divisor of width and height
Common ratios include 16:9 for widescreen video, 4:3 for older TVs and 1:1 for square photos. This calculator also gives the decimal ratio, handy for scaling images without distortion.
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