Calculate Square Feet Formula?

The formula to calculate square feet is one of the most simple you must use when measuring areas or other building and decorating specifications. To calculate square feet in any space, simply measure the total length by the total width. For example, if a room measures 12 feet in length and 9 feet in width, the total number of square feet in the space is 108 square feet. One square foot equals 144 square inches, in case the square footage calculation needs to be converted to inches.