Aspect Ratio Calculator

Form Aspect Ratio

The following simple tool will help you quickly and easily calculate the correct aspect ratio for your image or video.

You will need to enter the width and height of the original image, and below enter either the width or the height of the final image. And the script will calculate the second value.

Aspect Ratio

1 : 1


1 × 1


About Aspect Ratio Calculator

What is aspect ratio?

Aspect ratio is the proportional relationship between the width and height of an image. Usually it is described by two numbers and a semicolon between them, for example, 2: 1. This means that the width of the image is twice its height. It is a very useful device for resizing photos or videos for your blog or social media account.


Let's say you have a 1600 x 1200 px photo, but your blog only has space for a 400px wide photo. To find the new height for your photo - while maintaining the aspect ratio - you will need to do the following calculation:

(original height / original width) x new width = new height
(1200 / 1600) x 400 = 300

How it Works?

Use Aspect Ratio Calculator to calculate the missing value for a particular aspect ratio. This is useful, for example, when resizing photos or video.

  • Enter the values for the original width and original height.
  • Enter either a desired width or desired height to calculate the remaining value.
  • Click the Calculate button