📐 Area Calculator

An area calculator is a tool that helps you calculate the area of various geometric shapes like rectangles, circles, triangles, and more. Simply input the required measurements, and the calculator will instantly provide the area result along with the formula used.

Our area calculator supports 8 common shapes: rectangle, square, triangle, circle, ellipse, trapezoid, parallelogram, and rhombus. Each shape requires different input parameters based on its geometric properties.

The calculator supports both metric (mm, cm, m, km) and imperial (in, ft, yd, mi) units for length measurements. The area results are automatically displayed in the corresponding square units (e.g., m², ft², etc.).

Our calculator uses standard geometric formulas and provides results with up to 6 significant figures. All calculations are mathematically accurate, but for professional applications, please verify results with appropriate engineering standards.

This calculator is designed for regular geometric shapes. For irregular shapes, you would need to break them down into simpler shapes and calculate each area separately, then sum the results.

Area measures the space inside a shape (expressed in square units), while perimeter measures the distance around the outside of a shape (expressed in linear units). This calculator focuses on area calculations.

To calculate triangle area, you need the base and height measurements. The formula is: Area = (Base × Height) ÷ 2. The height must be perpendicular to the base.

Each geometric shape has unique properties that determine its area. For example, a circle only needs radius, while a rectangle needs both length and width. The calculator automatically shows the required fields based on your shape selection.