Square Footage Calculator
Get the area of any rectangular space in square feet — plus square yards, square meters, and acres — instantly.
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Area
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How the square footage calculator works
Square feet = Length × Width
Multiply length by width to get the area in square feet. For L-shaped rooms, split the space into rectangles, calculate each, and add them together. We also convert to square yards (÷9), square meters (×0.0929), and acres (÷43,560).
Frequently asked questions
How do I calculate square footage of a room?
Multiply the room's length by its width in feet. A 12 ft × 10 ft room is 120 square feet.
How many square feet in a square yard?
Nine — a square yard is 3 ft × 3 ft. Divide square feet by 9 to get square yards.