Geometry Calculators
Explore a wide range of geometry calculators for various shapes.
Circle
Calculate the area, perimeter, and diameter of a circle
Triangle
Calculate the area, perimeter, and apply the Pythagorean theorem for triangles
Rectangle
Find the area, perimeter, and diagonal length of a rectangle
Square
Calculate the area, perimeter, and diagonal of a square
Parallelogram
Calculate the area and perimeter of a parallelogram
Trapezoid
Calculate the area and perimeter of a trapezoid
Rhombus
Calculate the area and perimeter of a Rhombus
Ellipse
Elliptical insights made easy
Cylinder
Calculate the volume and surface area of a cylinder
Sphere
Find the volume and surface area of a sphere
Torus
Find the volume and surface area of a Torus
Cube
Find the volume, surface area & edge length of a Cube
Cone
Find the Volume and Surface Area of a Cone
Pyramid
Find the Volume and Surface Area of a Pyramid
Ellipsoid
Find the Volume and Surface Area of an Ellipsoid
Cuboid
Find the Volume and Surface Area of a Cuboid
Prism
Find the Volume and Surface Area of a Prism
Regular Polygon
Find the area and perimeter of a Regular Polygon
Pentagon
Find the area and perimeter of a Pentagon
Hexagon
Find the area and perimeter of a Hexagon
About Our Geometry Calculators
This collection of online geometry calculators helps you solve mathematical problems for a wide range of shapes including circles, triangles, squares, rectangles, trapezoids, cylinders, cones, spheres, and more. Whether you're calculating area, perimeter, volume, or surface area, each tool is designed for accuracy, ease of use, and quick results.
Our calculators are ideal for students, teachers, engineers, and professionals who need fast, reliable answers for geometry-related calculations. From basic 2D shapes to complex 3D solids, this page serves as a central hub to explore all your geometry tool needs in one place.
Each shape-specific calculator includes formula references and works instantly in your browser. No downloads, no registration — just simple, accurate math.
Use this page to quickly access:
- Area and perimeter calculators for 2D shapes like circles, triangles, and rectangles
- Volume and surface area tools for 3D solids like cylinders, cones, spheres, and pyramids
- Special formulas like Heron's formula and the Pythagorean Theorem
Whether you're solving homework, preparing for exams, or working on construction or design tasks, our geometry tools make calculations fast and accurate.