What is the Cone Volume Calculator?
Calculate the volume, slant height and surface area of a cone.
Enter radius and height and the Cone Volume Calculator returns volume, slant height and total surface area. Results update as you type, and nothing you enter leaves your device.
How it is calculated
Volume = ⅓ πr²h
Slant height = √(r² + h²)
How to use it
- Enter radius.
- Enter height.
- Read volume in the results panel. It updates as you type.
- Change any value to compare scenarios, or use Share to send the result as a link.
Worked example
Common questions
What formula does the Cone Volume Calculator use?
It uses: Volume = ⅓ πr²h; Slant height = √(r² + h²).
What do I need to use the Cone Volume Calculator?
You need radius and height. Sensible starting values are filled in so you can see how it works straight away.
Is the Cone Volume Calculator free, and is my data stored?
It is free with no sign-up. The calculation runs in your browser, so the values you enter are not sent to or stored on our server.