What shapes are supported?

Rectangle (length × width), circle (πr²), and triangle (½ × base × height).

What units can I use?

Any linear unit (m, ft, cm, etc.). Area will be in that unit squared (e.g. m², ft²).

No. The formula ½ × base × height works for any triangle (height is perpendicular to base).

Calculate area for rectangle, circle, and triangle. Enter dimensions and get area instantly.

Shape

Length

Width

What shapes are supported?: Rectangle (length × width), circle (πr²), and triangle (½ × base × height).
What units can I use?: Any linear unit (m, ft, cm, etc.). Area will be in that unit squared (e.g. m², ft²).
Is the triangle right-angled?: No. The formula ½ × base × height works for any triangle (height is perpendicular to base).

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