## Properties of Sphere

This tool calculates the basic geometric properties of a sphere. Enter the shape dimensions R or D below. The calculated results will have the same units as your input. Please use consistent units for any input.

 R = ...or D = Geometric properties: Radius = Diameter = Volume = Surface area =

## Definitions

### Geometry

The sphere is a 3-dimensional object (solid), with all the points of its outer outer surface having an equal distance from a common point, called centre. That distance is called radius of the sphere. The volume of a sphere is given by the formula:

$V = \frac{4}{3}\pi r^3$

where r the radius.

The outer surface area of the sphere is given by the next formula:

$A = 4\pi r^2$