Aspect Ratio Calculator
How I use this:
Often, I know the dimensions of an image and know that I want to resize it to fit a certain height or width. This calculator lets you enter the original size, then either your desired height or width, and the missing dimension is automatically calculated.
Let’s say I have an image that’s 1024 x 768. I’m trying to fit the image into a width of 800 pixels to fit in my eLearning authoring tool. I can just type “800” in the width field and the calculator will kick out “600”.