Geometry

Cone Calculator

Cone surface and volume.

Free to use — no sign-up or login.

Cone measurements figure A cone projection with radius, vertical height, right angle, and slant height marked.

Enter valid values to draw the figure.

r = radius · h = height · s = slant · S = surface · V = volume

Radius r and height h determine the cone; slant s = √(r² + h²) follows the side.

Surface

Volume

This free Cone Calculator covers Cone surface and volume.

Cone volume (1/3)πr²h; slant s = √(r² + h²) enters the surface formula. Related geometry tools sit beside How it works, with no account required.

Using the Cone Calculator

Cone surface and volume. Typical inputs are Radius (r) and Height (h). How it works beside the form states the identity the Cone Calculator applies.

FAQ

How do I use the Cone Calculator?

Open the Cone Calculator, fill Radius (r) and Height (h), and read the result. Compute slant height, then surface and volume.

What formula does the Cone Calculator use?

The Cone Calculator uses the identity in How it works. In words: Compute slant height, then surface and volume.