Area Calculator
Calculate the area of circles, squares, rectangles, and triangles. Supports multiple geometric shapes with accurate formulas
Calculator
How to Calculate
- 1Select the geometric shape you want to calculate (Circle, Square, Rectangle, or Triangle)
- 2Enter the required dimensions for your selected shape
- 3For a circle, enter the radius
- 4For a square, enter the side length
- 5For a rectangle, enter both length and width
- 6For a triangle, enter the base and height
- 7Click 'Calculate' to get the area
- 8The result shows the area in square units along with the calculation formula
- 9You can switch between different shapes and recalculate as needed
Examples
Example 1: Circle with radius 5
Inputs
Formula
π × r² = π × 5² ≈ 78.5398
Result
Example 2: Rectangle 8 × 3
Inputs
Formula
Result: Area = 24 square units
Result
Example 3: Triangle base 6, height 4
Inputs
Formula
Result: Area = 12 square units
Result
Frequently Asked Questions
Find answers to common questions about using this calculator. If you have additional questions, feel free to explore the examples above or contact our support team.
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Learn More
How to Calculate Area of Shapes
Learn how to calculate the area of different geometric shapes including circles, squares, rectangles, and triangles with step-by-step examples.
Area vs Perimeter: What's the Difference
Understand the key differences between area and perimeter, when to use each, and how they relate to different geometric shapes.