Find cone volume, slant height, lateral and total surface area from radius and height, in any length unit.
Result
How to use this tool
Enter the radius of the circular base.
Enter the vertical height from base to apex.
Pick the length unit for the labels.
Read volume, slant height, lateral area, total area and base area.
Formula & worked example
A cone of radius 3 cm and height 4 cm has slant height 5 cm, volume 37.6991 cm³ and total surface area 75.3982 cm².
Limitations — read this before you rely on it
Right circular cones only; oblique cones and frustums (truncated cones) are not covered.
Frequently asked questions
The distance from the apex to a point on the base rim, found by Pythagoras: √(radius² + height²).
Volume = (1/3)π r² h, one third of the cylinder with the same base and height.
The curved side area only, π r s, excluding the base.
Lateral area plus the base circle: π r s + π r².
No. It labels the result in your unit; convert radius and height yourself if you need a different unit.