Calculators & Converters
Aspect Ratio Calculator
The Aspect Ratio Calculator simplifies any width and height into its lowest-terms ratio, such as 16:9 or 4:3, and shows the decimal equivalent.
It can also scale a new width to the matching height (or vice versa) so your images, videos or designs keep the same proportions.
How to Use the Aspect Ratio Calculator
- Open the Aspect Ratio Calculator.
- Enter your current width and height.
- See the simplified ratio and decimal value.
- Optionally enter a new width to get the proportional height.
Frequently Asked Questions
How is the ratio simplified?
Width and height are divided by their greatest common divisor (GCD) to get the smallest whole-number ratio.
Can I scale by height instead of width?
Currently the tool scales from a given width to the matching height; swap your width and height fields if you need it the other way around.
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