Cone Volume Calculator
Find the volume, slant height, and surface area of a cone.
A third of a cylinder
A cone holds exactly one-third the volume of a cylinder with the same base and height. This calculator gives its volume along with the slant height and surface areas.
A cone of radius 3 and height 4 has a volume of about 37.7, a slant height of 5, and a total surface area near 75.4. Enter your own dimensions for exact values.
Complete and private
The calculation runs in your browser, so nothing you enter is uploaded.
Frequently Asked Questions
What is the formula?
Volume is one-third pi times the radius squared times the height — a third of the matching cylinder.
What is slant height?
The distance from the apex to the base edge, the square root of radius squared plus height squared.
What does it return?
Volume, slant height, lateral area, and total surface area.
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