Use the form below to calculate the missing value for a particular aspect ratio. This is useful, for example, when resizing photos or video.
Your aspect ratio is: ? : ?
Say you have a photo that is 1600 x 1200 pixels, but your blog only has space for a photo 400 pixels wide. To find the new height of your photo—while preserving the aspect ratio—you would need to do the following calculation:
original height / original width x new width = new height
1200 / 1600 x 400 = 300
Note: this is the new, improved version. You can still use the original aspect ratio calculator if you prefer.