Sphere Surface Area Calculator: Radius and Diameter

Sphere surface area calculator: calculate the surface area of a sphere from radius or diameter, and reverse the formula to find the missing sphere radius or diameter from the area.

Initial Data

Surface area of a sphere formulas

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

Radius Diameter

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
Parallelepiped
Rectangular cuboid
Regular prism
Regular pyramid
Sphere
Spherical cap
Tetrahedron (regular)
Torus

» Surface Area of a Sphere Calculator

Initial Data

Surface area of a sphere formulas

See also:

2-dimensional shapes

3-dimensional shapes