Cylinder & Cone Calculator
Fill in the values and the answer updates as you type.
How the Cylinder & Cone Calculator works
Cylinder: V = πr²h and surface = 2πr(r + h). Cone: V = ⅓πr²h and surface = πr(r + s), where slant height s = √(r² + h²). A cone holds exactly one third of the cylinder with the same base and height. Example: with the default values, cylinder volume comes to 785.4.
Inputs and results
The Cylinder & Cone Calculator takes 2 inputs and gives 5 results.
What you enter
- Radius — starts at 5.
- Height — starts at 10.
What you get
- Cylinder volume
- Cylinder surface area
- Cone volume
- Cone surface area
- Cone slant height
Example: Cylinder & Cone Calculator with the starting values
With radius 5 and height 10, the calculator returns:
| Cylinder volume | 785.4 |
|---|---|
| Cylinder surface area | 471.24 |
| Cone volume | 261.8 |
| Cone surface area | 254.16 |
| Cone slant height | 11.18 |
Change any value above and the results update straight away.
Cylinder & Cone Calculator FAQ
How do I use the Cylinder & Cone Calculator?
Enter radius and height in the fields, then read cylinder volume, cylinder surface area, cone volume and cone surface area in the result panel. The answer updates as you type, and you can press Calculate or Enter to refresh it. Use “Copy link” to share your exact numbers with someone else.
What does the Cylinder & Cone Calculator calculate?
Volume and surface area for a cylinder and a cone of the same size. It returns cylinder volume, cylinder surface area, cone volume and cone surface area from the 2 values you provide.
What values does the Cylinder & Cone Calculator start with?
It opens with radius 5 and height 10 so you can see a working result straight away. Replace them with your own numbers, or press Reset to return to these starting values.
Is the Cylinder & Cone Calculator free and private?
Yes. It is free, needs no account, and runs in your browser, so nothing you type is sent to or stored on our servers. See the Privacy Policy for details.
Can I rely on the Cylinder & Cone Calculator for important decisions?
Treat the result as a well-rounded estimate. Real situations often have details a general calculator cannot know, so confirm important decisions with a qualified professional. See the Disclaimer for more.