Volume of a Cylinder Calculator

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Cylinder Volume

For Finding Volume of a Cylinder with Circular Base

formula for volume of a cylinder example
radius (r) units
height (h) decimals

A cylinder with a radius of 3 units and a height of 5 units has a volume of 141.372 cubed units.

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Cylinder Volume on chalkboard

Calculating the Volume of a Cylinder:

If a cylinder has a flat bottom, meaning the height and radius meet at right angles, then this formula can be used to find of volume ('V') of that cylinder:

V = PI*r2h

In plain english the volume of a cylinder can be calculated by squaring the radius, multiplying that value by PI, then multiplying by the height. You can also think of it as finding the area of a flat circle (PI * radius squared) and multiplying by the height to find volume.

Here is a step-by-step case that illustrates how to find the volume of a cylinder with a radius of 3 inches and a height of 5 inches. In this example PI will be 3.14.

  • V = pi * r2 * h
  • = pi * 32 * 5
  • = pi * 9 * 5
  • = 3.14 * 45
  • = 141.37 cubic inches

Need help converting volume to other units?

Volume unit converts