Measure the length and width in feet and multiply them: a 12 ft by 10 ft room is 120 square feet. For L-shaped or irregular rooms, split the space into rectangles, calculate each one, and add them up. A free room area calculator does the multiplication and the unit conversions instantly.
Free room area calculator. Enter length and width to find square footage, and add multiple rooms to get a running total for a whole project.
Open Room Area Calculator → Free toolFree square feet to square meters converter. Convert ft2 to m2 instantly (1 ft2 = 0.092903 m2). Live result as you type, no sign-up, private.
Open Square Feet to Square Meters Converter →Area = length x width, so 15 ft by 12 ft is 180 square feet. An L-shaped room is just two rectangles: measure each section separately and add the results. Measure at floor level along the walls, and keep all measurements in feet (convert inches to decimals, so 6 inches is 0.5 ft) before multiplying.
Square footage drives flooring and paint quantities, rent and sale price comparisons, and heater or air conditioner sizing. If you need metric, one square meter is about 10.764 square feet, so a 120 sq ft room is about 11.15 square meters. When ordering materials, it is common practice to add roughly 10 percent for cuts and waste.
144 square feet, from 12 x 12.
Divide by 10.764. A 120 sq ft room is about 11.15 square meters.
It depends on the purpose. For flooring or paint, measure every surface you will actually cover. Real estate listing conventions vary, so check the standard used in your market.