HomeCalculatorsGeneral CalculatorsArea CalculatorArea Calculator Calculate the area of rectangles, circles, triangles, and more in one place. Our interactive Area Calculator gives instant results for all shapes!Rectangle / SquareCircleTriangleTrapezoidParallelogramEllipseRectangle / Square Length (units) Width (units) DimensionValueCircle Radius (units) DimensionValueTriangle Base (units) Height (units) DimensionValueTrapezoid Base 1 (units) Base 2 (units) Height (units) DimensionValueParallelogram Base (units) Height (units) DimensionValueEllipse Major Axis (units) Minor Axis (units) DimensionValue More ToolsAverage CalculatorBinary CalculatorCalculatorDice RollerExponent CalculatorFraction CalculatorHex CalculatorLog CalculatorLong Division CalculatorMatrix CalculatorPercent CalculatorPercent Error CaculatorQuadratic Formula CalculatorRatio CalculatorRounding CalculatorScientific CalculatorSquare Root CalculatorVolume Calculator