Geometry & Shapes Calculators
Geometry calculators for areas, perimeters, volumes, triangles and circles, with proportional diagrams that make the shapes easy to understand.
View all calculators- Triangle SolverVisual triangle solving
- Circle CalculatorCircle measurements visualized
- Area & PerimeterShape area & perimeter
- Volume Calculator3D shape volume & surface area
- Pythagorean TheoremRight triangle solver
- Coordinate Distance & MidpointDistance & midpoint on a grid
- Regular Polygon CalculatorAny regular polygon
- Ellipse CalculatorCalculate ellipse area, circumference approximation, eccentricity, and foci
- Trapezoid CalculatorSolve trapezoid area, height, bases, median, and perimeter
- Circle Sector CalculatorCalculate sector area, arc length, chord length, and perimeter
- Arc Length CalculatorSolve arc length, radius, or angle for a circular arc
- Conic Section AnalyzerClassify and graph a conic from its equation
- Hyperbola PropertiesFoci, vertices, and asymptotes of a hyperbola
- Parabola Focus & DirectrixFocus, directrix, and vertex of a parabola
- 3D Distance & MidpointDistance and midpoint between two 3D points
- Plane from 3 PointsPlane equation and normal vector from three points
- Line-Plane IntersectionWhere a line meets a plane in 3D
- Rotation Matrix2D and 3D rotation matrices from angles
- Point in PolygonRay-casting point-in-polygon test
- Convex HullConvex hull of a set of points
- Voronoi DiagramVoronoi regions for a set of points
- Sphere & Solid GeometrySurface area and volume of spheres, cones, and cylinders
- Platonic SolidsFaces, edges, vertices, area, and volume of regular solids
- Delaunay TriangulationTriangulate a set of points (dual of Voronoi)
- 2D Vector CalculatorAdd, subtract, and project 2D vectors