Aspect Ratio Calculator

A tool to calculate the missing value for a particular aspect ratio. This tool is useful when you need to resize an image or video to a specific aspect ratio.

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Note: When rounding is enabled and you're using small numbers, the results may not be exact and you may find the tool unhelpful.

Your aspect ratio is 16 : 9.

Aspect ratio calculator result

Instructions

  1. Enter the values for the original width (W1) & original height (H1).
  2. Enter either a new width (W2) or new height (H2) on the right to calculate the remaining value.

Note: The calculator is omnidirectional. You can enter any of the values and the calculator will calculate the remaining value.

Formula

Say you have a video that is 1920 x 1080 pixels, but your blog only has space for a video half of that size. To find the new height of your video while preserving the aspect ratio you would need to do the following calculation:

(original height / original width) x new width = new height

Running the calculation with the values from the example, we get:

(1080 / 1920) x 960 = 540

So the new height of your video would be 540 pixels.