Area calculator
Area of a rectangle, circle, triangle or trapezoid in square metres and square feet.
For L-shaped rooms, split them into rectangles and add the areas.
How this calculator works
Rectangle: length × width. Circle: π × radius². Triangle: ½ × base × perpendicular height. Trapezoid: the average of the parallel sides × height. 1 m² = 10.7639 ft².
Worked example: a 5 × 4 m room is 20 m² (215.28 ft²). A circular garden bed 1.5 m in radius is about 7.07 m².
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