Square Footage Calculator
Calculate area for rooms, floors, and land
Area Formulas
- Rectangle: Area = Length × Width
- Circle: Area = π × r²
- Triangle: Area = ½ × Base × Height
- Trapezoid: Area = ½ × (a + b) × Height
Common Conversions
- 1 square foot = 144 square inches
- 1 square yard = 9 square feet
- 1 square meter = 10.764 square feet
- 1 acre = 43,560 square feet