Geometry Calculators
Calculate area, perimeter, volume, and surface area for plane shapes and solid figures. Coordinate geometry tools for distance and midpoint.
26 calculators available
26 calculators found
Plane Geometry (2D)
10
Plane Geometry (2D)
10Annulus Calculator
Area and circumference of a ring shape from outer and inner radii.
Circle Calculator
Area, circumference, and diameter of a circle from its radius.
Equilateral Triangle Calculator
Area, perimeter, and height of an equilateral triangle.
Isosceles Triangle Calculator
Area, perimeter, and height of an isosceles triangle.
Parallelogram Calculator
Area, perimeter, and diagonals of a parallelogram.
Rectangle Calculator
Area, perimeter, and diagonal of a rectangle.
Regular Polygon Calculator
Area, perimeter, and interior angles of any regular polygon.
Rhombus Calculator
Area, perimeter, and diagonals of a rhombus.
Square Calculator
Area, perimeter, and diagonal of a square.
Stadium Calculator
Area and perimeter of a stadium (discorectangle) shape.
Solid Geometry (3D)
12
Solid Geometry (3D)
12Capsule Calculator
Volume and surface area of a capsule shape.
Cone Calculator
Volume, surface area, and slant height of a cone.
Conical Frustum Calculator
Volume, surface area, and slant height of a truncated cone.
Cube Calculator
Volume, surface area, and space diagonal of a cube.
Cylinder Calculator
Volume, surface area, and lateral area of a cylinder.
Ellipsoid Calculator
Volume and approximate surface area of an ellipsoid.
Hemisphere Calculator
Volume and surface area of a hemisphere.
Pyramid Calculator
Volume, surface area, and slant height of a square pyramid.
Rectangular Prism Calculator
Volume, surface area, and space diagonal of a box.
Sphere Calculator
Volume, surface area, diameter, and circumference of a sphere.
Triangular Prism Calculator
Volume and surface area of a triangular prism.
Tube Calculator
Volume and surface area of a hollow cylinder.
Coordinate Geometry
4
Coordinate Geometry
4Distance Calculator (2D)
Euclidean distance and midpoint between two points.
Midpoint Calculator
Midpoint coordinates and segment length between two points.
Law of Cosines Calculator
Solve triangle sides or angles using the law of cosines.
Triangle Solver
Solve any triangle given three sides using Heron's formula.
Which calculator do you need?
- I need to find the area of a flat shapeUse one of our Plane Geometry calculators — select the specific shape (circle, rectangle, triangle, etc.).
- I need the volume or surface area of a 3D objectUse our Solid Geometry calculators for spheres, cones, cylinders, prisms, and more.
- I need to find the distance between two pointsUse the Distance Calculator (2D) for Euclidean distance and midpoint computation.
- I need to solve a triangle from its sides or anglesUse the Triangle Solver (SSS) or Law of Cosines calculator.
Geometry Formulas You Actually Use
From laying carpet to packing boxes, geometry is the math that meets the real world. The most-used formulas are surprisingly few: area of a rectangle (l × w), volume of a box (l × w × h), area of a circle (πr²), and the Pythagorean theorem (a² + b² = c²). Our calculators handle the algebra so you can focus on measurement.