Square Footage Calculator
Calculate area for various shapes
✓ Your Input
Select a shape, enter measurements, and click Calculate Area to see the result and step-by-step solution.
Complete User Guide
What is Square Footage?
Square footage is the area measurement in square feet. It's commonly used for measuring floor space, rooms, and property areas.
How to Use
- Select the shape
- Enter the required measurements
- Select length and result units
- Click Calculate Area to see the result and step-by-step solution
- Use Reset to clear and hide results
Supported Shapes
- Rectangle: Length × Width
- Square: Side × Side
- Circle: π × r²
- Triangle: (1/2) × Base × Height
- Trapezoid: (1/2) × (Base1 + Base2) × Height
- Ellipse: π × a × b
Area Formulas
Rectangle: A = l × w
Square: A = s²
Circle: A = πr²
Triangle: A = (1/2)bh
Trapezoid: A = (1/2)(b₁ + b₂)h
Ellipse: A = πab
Area Units
ft²: Square feet
m²: Square meters
yd²: Square yards
in²: Square inches
acres: 1 acre = 43,560 ft²
hectares: 1 hectare = 10,000 m²
Common Conversions
1 ft² = 0.092903 m²
1 m² = 10.764 ft²
1 yd² = 9 ft²
1 acre = 43,560 ft²
1 hectare = 2.471 acres
Important Notes
- Measure accurately for best results
- Use consistent units throughout
- For irregular shapes, divide into regular shapes
- Account for obstacles and non-rectangular areas
- Double-check measurements before calculating
Common Applications
- Flooring and carpeting
- Painting and wallpaper
- Property valuation
- Construction planning
- Real estate listings