Area Calculator
Need to calculate the area of a shape quickly? Our Area Calculator lets you compute the area (and perimeter when applicable) of rectangles, squares, circles, triangles, and trapezoids. It's fast, interactive, and perfect for students, teachers, engineers, or anyone working with geometry.
How to Use the Area Calculator
- Select a Shape
Choose the shape you want to calculate: Rectangle, Square, Circle, Triangle, or Trapezoid. - Enter the Required Dimensions
Depending on the shape:
- Rectangle: Length and Width
- Square: Side length
- Circle: Radius
- Triangle: Base and Height
- Trapezoid: Base 1, Base 2, and Height
- Click Calculate
The calculator displays:
- Shape Name
- Area (in square units)
- Perimeter or Circumference (for rectangle, square, circle)
- Reset for New Calculations
Use the reset button to clear inputs and start fresh.
Example Calculations
Rectangle
- Length: 10 units
- Width: 5 units
- Area = 10 × 5 = 50 sq units
- Perimeter = 2 × (10 + 5) = 30 units
Circle
- Radius: 7 units
- Area = π × 7² ≈ 153.94 sq units
- Circumference = 2 × π × 7 ≈ 43.98 units
Triangle
- Base: 8 units
- Height: 5 units
- Area = 0.5 × 8 × 5 = 20 sq units
- Perimeter is not calculated (requires side lengths)
Trapezoid
- Base 1: 6 units
- Base 2: 4 units
- Height: 5 units
- Area = 0.5 × (6 + 4) × 5 = 25 sq units
Why Use This Calculator?
- Saves time on manual calculations
- Ideal for homework, projects, or engineering tasks
- Handles multiple shapes in a single tool
- Provides accurate results with decimals
- Interactive and user-friendly interface
Tips for Accurate Results
- Always enter positive numbers for dimensions.
- Use the correct unit for consistency (e.g., meters, cm, inches).
- Remember triangles and trapezoids only display area; perimeter requires additional side lengths.
- For circles, the calculator displays circumference instead of perimeter.
FAQ
Q1: Can I calculate the perimeter for triangles?
No, this calculator only provides area for triangles. Perimeter requires all three side lengths.
Q2: Can I use decimals?
Yes, the calculator supports decimal values for precise results.
Q3: Is the area displayed in specific units?
The area is shown in square units; use consistent units when entering dimensions.
Q4: Can I recalculate for another shape?
Yes, select a new shape and enter the dimensions, then click Calculate.
Q5: Is this tool free to use?
Yes, it is fully free and interactive.
Conclusion
Our Area Calculator is a versatile and accurate tool for finding areas and perimeters of common geometric shapes. Whether for school, work, or personal projects, it provides instant, reliable results with an easy-to-use interface.