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The square footage of a house is found by multiplying length times width, so a house that is 30 feet by 40 feet measures 1,200 square feet, assuming the house has only one story. The square footage of additional stories should be added as part of the total square footage.
Know MoreThe American National Standards Institute suggests using external measurements when calculating the square footage of a house. Any rooms that are not finished or heated like the rest of the house, such as an attic or a basement, should not be included in the total. A garage should also not be included as part of a house's square footage, though it is counted when calculating the footprint of a house.
Learn more about ArithmeticTo figure out the square footage of an area, one must first measure the sides of the area or the diameter of the area if the area is round. Then, depending on the shape of the area, the appropriate formula must be applied to determine the square footage.
Full Answer >To calculate the square footage of a square or rectangle, measure the length and width of the area in feet, then multiply length by width to determine square footage. Different formulas are used to calculate the square footage of different shapes.
Full Answer >To calculate an object's square footage, first measure the height and length. Ensure the height and length have the same units, then multiply them together to find the square footage.
Full Answer >To get the square footage of a home, measure the exterior walls of each floor of the home to the nearest inch. Once the measurements are done for each floor, multiply the length and the width, and add all of the floors' measurements together.
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