Area Calculator
Calculate area for squares, rectangles, circles, triangles, and more. Get accurate area measurements in square feet, square meters, acres, and other units.
Step 1: Select Shape & Dimensions
Area Formulas
Rectangle: Length × Width
Circle: π × Radius²
Triangle: ½ × Base × Height
Trapezoid: ½ × (Base1 + Base2) × Height
Step 2: Units & Options
Common Area References
Basketball court: 4,700 ft²
Tennis court: 2,808 ft²
Football field: 57,600 ft²
Average bedroom: 120-200 ft²
Area Calculation Results
Total Area
Area Comparison Table
| Reference | Area (ft²) | Area (m²) | Relative Size |
|---|
Area Formulas
Basic Area Formulas
Rectangle/Square: Area = Length × Width
Circle: Area = π × Radius² (π ≈ 3.14159)
Triangle: Area = ½ × Base × Height
Trapezoid: Area = ½ × (Base1 + Base2) × Height
Ellipse: Area = π × Major Axis × Minor Axis
Parallelogram: Area = Base × Height
Unit Conversions
Common Area Conversions
1 square foot = 144 square inches
1 square foot = 0.092903 square meters
1 square meter = 10.7639 square feet
1 acre = 43,560 square feet
1 hectare = 10,000 square meters
1 square yard = 9 square feet
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