About Aspect Ratio Calculator
An aspect ratio is the proportion between the width and height of an image, screen, or video, such as 16 : 9. This calculator rounds the width and height to whole numbers and divides both by their greatest common divisor to get the simplest ratio, and also shows it as a decimal (width ÷ height). For resizing, the new height is new width × height ÷ width. Width and height must be greater than zero.
How to use Aspect Ratio Calculator
- Fill in "Width", "Height" and "New width".
- The result appears below and updates as you type.
- Copy the result with the copy button, or download it as a file where that is offered.
Questions about Aspect Ratio Calculator
What aspect ratio is 1920 by 1080?
It is 16 : 9. Dividing both numbers by their greatest common divisor, 120, gives 16 and 9. The same ratio applies to 1280 by 720 and 3840 by 2160.
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