Cone Calculator
Calculate the volume and surface area of a cone from its radius and height.
Calculate
Enter your values below.
Result
Volume
0
Surface area
0
Formula used
Volume = ⅓πr²h, Surface area = πr(r + slant height), slant = √(r²+h²)
Example: Radius 4, height 9 → volume ≈ 150.8, surface area ≈ 175.5.
How to use this calculator
- Enter Radius, Height.
- Press Calculate to see your result instantly.
FAQ
Frequently asked questions
What is slant height?
The straight-line distance from the base edge to the apex, found using the Pythagorean theorem.
What real-world objects are cones?
Ice cream cones, traffic cones, and funnels.
Is this for a right circular cone?
Yes, this assumes the apex sits directly above the center of the circular base.
What units is the result in?
Volume in your unit cubed, surface area in your unit squared.