Volume of Rectangle
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Cone Volume Calculator

Determine the exact volume of a cone by entering its radius and height.

V = \frac{1}{3} \pi r^2 h
r = ?
h = ?
Diagram updates instantly as you type.

What is a Cone?

A pyramid with a circular base.

A cone is a three-dimensional geometric shape that tapers smoothly from a flat, circular base to a point called the apex or vertex.

Key Information
Shape Focus
cone volume calculator

How to Find Cone Volume

Calculating a cone's volume is straightforward.

1
Determine the radius of the circular base.
2
Determine the vertical height from the base to the apex.
3
Square the radius, multiply by pi, multiply by height, and divide by 3.

Cone Volume Formula

The standard equation for a cone.

V = \frac{1}{3} π r^2 h
V Volume
r Radius
h Height

Where 'V' is volume, 'r' is the radius of the base, and 'h' is the vertical height.

Frequently Asked Questions

How is a cone related to a cylinder?

The volume of a cone is exactly one×third the volume of a cylinder with the exact same base radius and height.

Do I use slant height or vertical height?

For volume calculations, you must always use the vertical height (altitude). The slant height is only used for calculating surface area.

What if my cone has the top cut off?

A cone with the top cut off is called a conical frustum, which requires a more complex formula to calculate its volume.

Is the formula different if the cone is tilted?

No, Cavalieri's principle states that an oblique (tilted) cone has the same volume as a right cone with the same base and vertical height.