How to calculate square footage. Use the calculator above to calculate your square footage. Find the length and width of each section labeled A and B here then calculate each square footage.
Select the rooms shape enter your measurements and click the Calculate button to determine its area in square feet.
108 X 255 2754 Divide this number by 144 2754144 1912 Sq Ft. Multiply the rectangles length by its width to get the area in square feet. Calculate the area of each section. 1 acre 43560 square foot 1 square yard 9 square foot 1 square meter 1076 square foot 1 square inch 000064516 square foot Calculating Cost Per Square Foot.