How do I calculate square footage of a room?

Measure the length and width of the room in feet. Multiply: sq ft = length × width. For irregular rooms, break them into rectangles and add together.

How do I convert square feet to square meters?

Multiply square feet by 0.0929 to get square meters. Example: 1,000 sq ft × 0.0929 = 92.9 m².

Calculate square footage for rectangles, L-shaped rooms, triangles, and circles. Add multiple areas together.

Shape

Length (ft)

Width (ft)

Area

120.00

square feet

FormulaArea = length × width = 10 × 12 = 120.00 sq ft

Rectangle: A = length × width. Triangle: A = 0.5 × base × height. Circle: A = π × r². L-shape: divide into two rectangles, calculate each, then add.

: Measure the length and width of the room in feet. Multiply: sq ft = length × width. For irregular rooms, break them into rectangles and add together.
: One acre = 43,560 square feet.
: Multiply square feet by 0.0929 to get square meters. Example: 1,000 sq ft × 0.0929 = 92.9 m².