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General Information, Facts & Tables
[Sphere Calculator]

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Page Topics:

Overview

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A sphere is a round solid with each point on the surface being equidistant from the centre.

See Also: Open Another, Using the Calculators
 

Formula

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Required

Known

r

d

c

A

V

r

-

 r = d / 2

 r = c / pi / 2

 r = (( A / pi )1/2) / 2

 r = (( V * 3 )/ ( 4 * pi ))1/3

d

 d = r * 2

-

 d = c / pi

 d = ( A / pi )1/2

 d = (( V * 6 )/ pi )1/3 

c

 c = 2 * pi * r

 c = pi * d

-

 c = ( A / pi )1/2 * p

 c = (( V * 6/ pi )1/3) * pi

A

 A = 4 * pi * r2

 A = pi * d2

 A = pi * (c / pi )2 

-

 A = (( V * 6/ pi )1/3)2 * pi

V

 V = 4 / 3 * pi * r3

 V = pi * d3 / 6

 V = pi * ( c / pi )3 / 6

 V = ((( A / pi )1/2 )3 ) / 6 * pi

-

 

Units

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r = Radius (metre [m])
d = Diameter (metre [m])
c = Circumference (metre [m])
A = Surface area (square metre [m2])
V = Volume (cubic metre [m3] or kilolitre [kL])
 

Calculator

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Show all available units

r []:

   

d []:

 

c []:

 

A []:

 

V []:

 

Note! Set unit values prior to calculating.
 

Notes

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A number to the power (1/2) or (0.5) is the square root of the number.
A number to the power (1/3) or (0.33333...) is the cube root of the number.