Geometry
Solve shapes from the measurements you know. Diagrams are drawn to scale from your inputs, and impossible shapes are reported clearly.
Triangle CalculatorSolve a triangle from SSS, SAS, ASA, AAS or RHS: sides, angles, area by Heron’s formula, heights, medians, bisectors and radii.Circle CalculatorRadius, diameter, circumference and area from any one of them, plus arc length, sector area, chord length and segment area.Area CalculatorArea of squares, rectangles, triangles, circles, trapezoids, parallelograms, rhombuses, ellipses and regular polygons.Volume CalculatorVolume and surface area of cubes, rectangular prisms, spheres, cylinders, cones, pyramids and triangular prisms.Pythagorean Theorem CalculatorFind the missing side of a right triangle from the other two with the Pythagorean theorem, shown step by step.Distance CalculatorDistance between two points in the plane with the distance formula, shown on a coordinate diagram.Midpoint CalculatorMidpoint of the segment joining two points, with the midpoint formula and a coordinate diagram.Slope CalculatorSlope, angle of inclination and the equation of the line through two points in slope-intercept and general form.Angle CalculatorConvert between degrees, radians, gradians and turns, find reference, complementary and supplementary angles, and the angle between lines.Coordinate Geometry CalculatorArea, perimeter, centroid and orientation of any polygon from its vertex coordinates using the shoelace formula.Polygon CalculatorRegular polygon area, perimeter, apothem, circumradius, interior and exterior angles and number of diagonals.