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About the Area Calculator
The Area Calculator computes the area of common geometric shapes, including circles, triangles, rectangles, and polygons. It also handles irregular shapes by splitting them into simpler parts. You enter your dimensions and get the area in square units.
The calculator uses standard area formulas, such as A = πr² for a circle, A = ½ × base × height for a triangle, and A = length × width for a rectangle. Inputs depend on the shape you pick: radius, side lengths, base and height, or coordinates for a polygon. Keep all measurements in the same unit so the result is correct. For an irregular plot, trace its outline, divide it into triangles, and add the parts.
- Choose the shape that matches your figure.
- Enter the required measurements, such as radius, sides, or base and height.
- Read the area result and confirm your units match.