Home›Geometry & Trig›Perimeter CalculatorPerimeter CalculatorCalculate the perimeter or circumference of geometric shapes.ShapeTriangleSquareRectangleParallelogramTrapezoidCircleEllipseRhombusDimensionsSide ASide BSide CDecimals012345678910Calculate PerimeterRelated ToolsKeep Working With Similar ToolsBrowse Geometry & Trig📐Trigonometry CalculatorGeometry & Trigsin, cos, tan and inverses→🔺Hypotenuse CalculatorGeometry & TrigPythagorean theorem→📍Midpoint CalculatorGeometry & TrigMidpoint between two points→📏Distance CalculatorGeometry & TrigDistance between two points→