Free Online Calculators

Area Calculator

Calculate area of square, rectangle, circle, triangle, trapezoid, parallelogram, and more.

Select Shape
Area
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Area Formulas

Rectangle: l×w | Square: s² | Circle: πr² | Triangle: ½×b×h | Trapezoid: ½(a+b)×h | Parallelogram: b×h | Ellipse: π×a×b

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