How to use this calculator
Calculate cone volume, slant height, and surface area from radius and height.
How the calculation works
- Enter radius and height.
- Volume uses one-third of the matching cylinder volume.
- Slant height supports surface area.
Formula
Volume = πr²h / 3.
Example
A cone with radius 3 and height 4 has volume about 37.699.
Understanding your result
Use the output as a practical starting point, then review it before using it in an important workflow.
Assumptions and limitations
- Use consistent units for radius and height.
- Surface area includes the base in this V1 calculator.
Frequently asked questions
Does this require an account?
No. The core tool works without creating a Tool2Do account.
Is my input included in share links or analytics?
No. Tool2Do share actions use the tool page URL and safe metadata, not private values or uploaded files.