Sphere Calculator

Enter radius of circle (r) or diameter (d)


Sphere - a three dimensional geometrical figure, the sphere is perfectly round. Similarly to the circle, only in 3 dimensions, it is defined by all points that are in the same distance from any given point. The name comes from the greek word σφαῖρα (sphaira), that means globe or ball.

Equation form:

d = 2 * r
r = d
Surface Area (SA) = 4 * π * r²
Volume (V) = 4 * π * r³

About Sphere Calculator tool.

Remember this tool should be used only to calculate area, perimeter or volume of a figure. The results we provide are accurate, but rounded to the 12th decimal place. It accepts scientific notation and converts immediately.