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Area Calculator
Area of geometric shapes
How It Works
Area describes the size of a two-dimensional figure in a plane. The SI unit for area is the square meter (m²). This calculator computes the area of common shapes.
Area describes the size of a two-dimensional figure in a plane. It can be visualized as the amount of paint needed to cover a surface. The SI unit is the square meter (m²).
A rectangle has four right angles; when length equals width it is a square. For triangles, Heron's formula computes area from side lengths alone. A trapezoid is a convex quadrilateral with at least one pair of parallel sides. A circle is defined by all points at a given distance (radius) from a center. An ellipse is the generalized form of a circle with two focal points. A parallelogram has two pairs of parallel sides; its area formula derives from rearranging into a rectangle.
Results
Enter values to see results
Quick Tips
- • Results update automatically as you type
- • Use Tab to navigate between fields
- • Press Enter to calculate