Enter the radius into the calculator to determine the volume of the stone. This calculator can also evaluate any of the variables given the others are known.

Stone Volume Formula

The following formula is used to calculate the volume of a stone.

V = 4/3 * π * r^3


  • V is the volume of the stone (cubic units) π is a constant, approximately equal to 3.14159 r is the radius of the stone (units of length)

To calculate the volume of a stone, cube the radius of the stone, then multiply the result by π (approximately 3.14159). Multiply this result by 4/3 to get the volume.

How to Calculate Stone Volume?

The following steps outline how to calculate the Stone Volume using the given formula:

  1. First, determine the radius of the stone (r) in units of length.
  2. Next, square the radius (r^2).
  3. Next, multiply the squared radius by π (π * r^2).
  4. Next, multiply the result by 4/3 (4/3 * π * r^2).
  5. Finally, calculate the Stone Volume (V).
  6. After inserting the variables and calculating the result, check your answer with the calculator above.

Example Problem:

Use the following variables as an example problem to test your knowledge:

radius of the stone (r) = 5 units

π (constant) = 3.14159