📐 Area Calculator
Calculate the area of seven common shapes: rectangle, triangle, trapezoid, circle, sector, ellipse, and parallelogram. Perfect for geometry, construction, and land measurement.
Rectangle
A quadrilateral with four right angles
Shape Visualization
Formula
Area = Length × WidthSelect Unit
Input Values
Triangle
A three-sided polygon
Shape Visualization
Formula
Area = √[s(s-a)(s-b)(s-c)] where s = (a+b+c)/2Select Unit
Input Values
Trapezoid
A quadrilateral with one pair of parallel sides
Shape Visualization
Formula
Area = (Base1 + Base2) × Height / 2Select Unit
Input Values
Circle
A round shape where all points are equidistant from the center
Shape Visualization
Formula
Area = π × Radius²Select Unit
Input Values
Sector
A portion of a circle bounded by two radii and an arc
Shape Visualization
Formula
Area = (θ/360°) × π × Radius²Select Unit
Input Values
Ellipse
An oval shape with two focal points
Shape Visualization
Formula
Area = π × Semi-major Axis × Semi-minor AxisSelect Unit
Input Values
Parallelogram
A quadrilateral with opposite sides parallel
Shape Visualization
Formula
Area = Base × HeightSelect Unit
Input Values
Our area calculator provides accurate calculations for seven common geometric shapes. Whether you're working on geometry homework, planning construction projects, or estimating land area, our calculator makes it easy to find the area of rectangles, triangles, trapezoids, circles, sectors, ellipses, and parallelograms. Simply enter the required dimensions and get instant results with step-by-step explanations.
Key Features
Discover the powerful features that make our area calculator indispensable for geometry and construction.
Supported Shapes
Our calculator supports seven common geometric shapes with their respective formulas.
Rectangle
A quadrilateral with four right angles. The area is calculated by multiplying length and width.
Area = Length × WidthTriangle
A three-sided polygon. Area calculated using Heron's formula with three side lengths.
Area = √[s(s-a)(s-b)(s-c)] where s = (a+b+c)/2Trapezoid
A quadrilateral with at least one pair of parallel sides.
Area = (Base1 + Base2) × Height / 2Circle
A perfectly round shape where all points are equidistant from the center.
Area = π × Radius²Sector
A portion of a circle enclosed by two radii and an arc.
Area = (θ/360°) × π × Radius²Ellipse
An oval shape with two focal points, like a stretched circle.
Area = π × Semi-major axis × Semi-minor axisParallelogram
A quadrilateral with opposite sides parallel and equal in length.
Area = Base × HeightHow to Use the Area Calculator
Follow these simple steps to calculate the area of any supported shape.
1. Select the Shape
Choose the geometric shape you want to calculate from the dropdown menu. Each shape has specific input requirements.
2. Enter Dimensions
Input the required measurements for your selected shape. Make sure to use consistent units throughout your calculation.
3. Choose Units
Select your preferred unit of measurement from the available options (feet, meters, inches, etc.).
4. Calculate Area
Click the "Calculate" button to get your result. The calculator will display the area in your chosen units.
5. View Results
Review the calculated area and any additional information provided, such as the formula used.
Area Calculation Tips
Helpful tips to improve your area calculations and make the most of our calculator.
Frequently Asked Questions
Common questions about area calculations and our calculator.
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