This is a utility I wrote to help in scanning documents to different sizes. What typically occurs is the customer gives you an image and they want it scanned to a certain size. The image usually won’t scale proportionately, so you will have two possible size that can fit either of the dimensions of the desired size.
ScanCalc will give you the two possible sizes of the image when it is scanned with the resolution and percent increase in page size to reach the final size.
You can get ScanCalc by clicking here.