Calculate the square footage of a room or area, with instant conversions to square yards and square meters.
area = length × width
Square footage is simply length times width in feet. For odd shapes, split into rectangles and add them up.
One square yard is 9 square feet; one square meter is about 10.76 square feet.
For a simple rectangle, square footage is just length times width — a 12 x 10 ft room is 120 square feet. For an L-shaped or irregular room, split it into rectangles, calculate each, and add them up.
Say an L-shaped room is a 12 x 10 ft section plus a 6 x 8 ft section: that's 120 + 48 = 168 square feet. This split-and-add method handles almost any floor plan. For triangles, use half the base times the height; for circles, π times the radius squared.
Pure geometry — no estimation. Use this to feed area into the flooring, tile, paint, and other calculators.
Multiply length by width in feet. A 12×10 room is 120 square feet.