An area calculator computes the area of common 2D shapes, rectangles, circles, triangles, and trapezoids, from their key dimensions.
About this calculator
An area calculator computes the area of common 2D shapes, rectangles, circles, triangles, and trapezoids, from their key dimensions. Area measurement comes up in construction, interior design, real estate, agriculture, and many everyday planning tasks.
Area formulas: Rectangle = length × width. Circle = π × radius². Triangle = 0.5 × base × height. Trapezoid = 0.5 × (sum of parallel sides) × height.
Common uses
- Calculate floor area for flooring or carpet purchase
- Determine paint coverage needed for a wall or room
- Compute land area for real estate or agriculture
- Find the area of an irregularly shaped space by dividing into shapes
Frequently asked questions
How do I calculate the area of an irregular shape?
Divide the irregular shape into standard shapes (rectangles, triangles, circles). Calculate the area of each part separately, then add them together. For land plots, this approach combined with GPS coordinates gives accurate land area measurements.