Surface Area of a Torus Calculator: Major and Minor Radius

Surface area of a torus calculator: calculate torus surface area from major and minor radii or diameters, and reverse the formula to find a missing torus radius from the area.

Initial Data

Surface area of a torus formulas

$$A= 4\pi^{2} R r$$

Major and minor radii Major and minor diameters

Major radius (R)

Minor radius (r)

Surface (A)

2-dimensional shapes

Circle
Ellipse
Kite
Parallelogram
Rectangle
Regular polygon
Rhombus
Sector
Square
Trapezium
Triangle

3-dimensional shapes

Capsule
Cone
Cone frustum
Cube
Cylinder
Ellipsoid
Hemisphere
Rectangular cuboid
Regular prism
Regular pyramid
Sphere
Spherical cap
Tetrahedron (regular)
Torus

» Surface Area of a Torus Calculator

Initial Data

Surface area of a torus formulas

See also:

2-dimensional shapes

3-dimensional shapes