I have seen these storage calculators on the web, and I cannot figure out for the life of me how the programming could take stacking into account. How can the programming determine if the chairs are stackable, or weather the customer would stand a couch on end or lay it down on the floor.

I use a quick and easy chart on my website that describes what is being stored, and the approximate size needed.

http://www.justrightselfstorage.ca/i...ce-calculator/