Area Calculator
Calculate the area of various geometric shapes with formulas, step-by-step solutions, and visual guides
Shape Selection
Results
Area Formulas
Basic Shapes
• Rectangle: A = length × width
• Square: A = side²
• Circle: A = π × radius²
• Triangle: A = ½ × base × height
Tips
• Use consistent units for all measurements
• For circles, π ≈ 3.14159
• Triangle height must be perpendicular to base
• Area is always in square units
Frequently Asked Questions
Each shape has its own formula: Rectangle (length × width), Circle (π × radius²), Triangle (½ × base × height), Square (side²). Enter the required measurements and the calculator will show the step-by-step solution.
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Tips
- Enter the dimensions in the same unit for consistency.
- Results update automatically as you type.
- Use the unit selector to convert between different measurement systems.