In any given space, you can multiply the length by the width to get the total square footage. For example, a closet that’s 4 feet long and 3 feet wide is 12 square feet.

How do you visualize 5 square feet?

How do you visualize 400 square feet?

A 400 square foot space will be roughly the size of a typical two-car garage. You can imagine the space being large enough to fit two cars with a small amount of wiggle room.