Math
Cone Volume Calculator
Use this cone volume calculator for geometry problems and cone-shaped containers.
Volume
—
- Base area
- —
- Slant height
- —
Student quick launch
Grade planning, algebra checks, and formulas students reach for most.
Study path
Use this calculator with
Follow these when you want the formula behind the answer, a short lesson, or nearby tools in the same topic.
What the cone volume calculator solves
Use this cone volume calculator for geometry problems and cone-shaped containers.
Formula
How to use it
- Enter radius.
- Enter perpendicular height.
- Divide the matching cylinder volume by 3.
How to read the answer
A cone with the same base and height as a cylinder has one-third the cylinder's volume.
Common mistakes and edge cases
- Do not use slant height as vertical height.
- Use radius, not diameter.
- Volume is in cubic units.
Worked examples
Standard cone
Volume
150.7964
Wide cone
Volume
188.4956
Frequently asked questions
Why divide by 3?+
A cone occupies one-third of the volume of a cylinder with the same base and height.
What is slant height?+
It is the side length from the rim to the tip, not the vertical height.
Can I use this for an oblique cone?+
The same volume formula works if height means perpendicular height from the base to the tip.
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Last updated: May 15, 2026