Basic Sphere Properties Calculator
PHP Program by Jay Tanner
Enter any ONE of the four spherical properties (R, C, A or V) and this program will compute the other three unknown properties.

The linear units can be interpreted as anything, such as meters, inches, miles, feet, etc., whatever you decide the units represent.
 R = Radius  
unit(s)
 C = Circumference  
unit(s)
 A = Area of Surface  
square unit(s)
 V = Volume  
cubic unit(s)
  
 View/Copy PHP Source Code 

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The Basic Spherical Elements



The Relevant Spherical Equations
Jay Tanner - 2025