Area Calculatrice
Calculer the area of rectangles, triangles, circles, trapezoids, and more with visual diagrams.
Calculer l'Aire
Area Formulas for Common Shapes
Area quantifies the amount of two-dimensional space enclosed within a shape's boundaries, expressed in square units (e.g., cm², m², sq ft). Understanding how to calculate area is essential for architecture, landscaping, and everyday home improvement projects like buying paint or flooring.
Geometric Shape Reference
Rectangle
Multiply the length by the width. Squares use the same formula where sides are equal.
Example: A 12m × 10m room = 120 m²
Triangle
Multiply half the base by the perpendicular height. The height must be perpendicular to the base.
Example: Base 10m, Height 6m = 30 m²
Circle
Multiply Pi (π ≈ 3.14159) by the squared radius. Radius is half the total diameter.
Example: Radius 7cm = 153.94 cm²
Trapezoid
Average the two parallel base lengths (a and b), then multiply by the perpendicular height.
Example: Bases 4cm & 6cm, Height 5cm = 25 cm²
Practical Applications
- • Construction & Renovation: Determine tiles, carpet, drywall, or floorboards required.
- • Home Projects: Calculate volume of paint required to cover walls.
Key Conversions
- • 1 Square Meter = 10.764 Square Feet
- • 1 Hectare = 10,000 Square Meters