How to Use
Use Single Room for one area, Multiple Rooms to add up several spaces, or Unit Converter to switch between area units.
Type the length and width, then select your unit — feet, meters, yards, inches, or centimeters.
Click Calculate to see the area with automatic conversions to all major units.
Frequently Asked Questions
Measure the length and width of the room in feet. Multiply them: Area (sq ft) = Length × Width. For example, a room 12 ft long and 10 ft wide has an area of 12 × 10 = 120 square feet.
1 square meter = 10.764 square feet. To convert: multiply sq m by 10.764 to get sq ft. To go the other way, multiply sq ft by 0.0929 to get sq m. For example, 50 sq m = 50 × 10.764 = 538.2 sq ft.
Split the L-shape into two rectangles. Measure the length and width of each rectangle, calculate each area separately, then add them. Use the Multiple Rooms tab above — add two rooms and click Calculate Total.
1 square yard = 9 square feet (since 1 yard = 3 feet, and 3 × 3 = 9). To convert sq yd to sq ft, multiply by 9. To convert sq ft to sq yd, divide by 9. For example, 45 sq ft = 45 ÷ 9 = 5 sq yd.
Select Inches in the unit dropdown and enter your measurements. The calculator converts for you. Alternatively: multiply length × width in inches to get square inches, then divide by 144 to get square feet (since 1 sq ft = 144 sq in).
Linear feet measure length in one direction (e.g., a 15 ft wall). Square feet measure area in two dimensions (length × width). A 15 ft × 10 ft room has 15 linear feet of length but 150 square feet of floor area. You always need two dimensions to compute square footage.