Question: one square feet is equal to how many feet?
Answer: A square foot is a unit of area. One can't be converted to the other. It is like trying to add 6 Apples to 3 Oranges. One square foot is one foot by one (perpendicular) foot to yield an area, or 1/2 foot by 2 feet to yield one square foot, or 100 ft by 1/100 foot.