Square Footage Calculator
Calculate area in square feet for rooms, properties, and various shapes. Convert between different area units.
Shapes
calculators.squareFootage.shapeNames.rectangle
Total Area
300 ft²
Square Meters
27.87 m²
Square Yards
33.33 yd²
acres
0.0069 ac
Perimeter
70 ft
Area Breakdown
calculators.squareFootage.shapeNames.rectangle 1
300.00 ft²Unit Conversions
1 ft²0.0929 m²
1 yd²9 ft²
1 acre43,560 ft²
Calculating Square Footage
Square footage is the area of a space in square feet. For rectangles, multiply length by width. For complex rooms, divide into simple shapes and add the areas.
Area Formulas
Rectangle: length × width. Triangle: ½ × base × height. Circle: π × radius². Trapezoid: ½ × (base1 + base2) × height.
Common Uses
Square footage is used for real estate pricing, flooring estimates, paint coverage calculations, and HVAC sizing. Accurate measurements save money on materials.