Volume & Surface Area

Calculate the volume and surface area of cubes, prisms, cylinders, cones and spheres, with formulas and units shown. Try “volume and surface area of a cone with r = 4, h = 9”.

Try an example:

What you can do with the Volume & Surface Area

Cubes, cylinders, cones, spheres and prisms.

Enter your values or describe the problem in the calculator above. Review the result and the explanation before using it in homework, study or practical calculations.

Example input

e.g. volume and surface area of a cone with r = 4, h = 9

How the Volume & Surface Area works

  1. Name the solid and list the given dimensions.
  2. For a cone, find the slant height l = √(r² + h²) if it is needed.
  3. Substitute into V = ⅓πr²h and S = πr² + πrl, and give cubic or square units.

Frequently asked questions

What is the volume of a sphere?

V = 4/3 πr³, and its surface area is 4πr².

What is the difference between volume and surface area?

Volume is the space inside a solid (cubic units); surface area is the total area of its outside (square units).

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