How it works
Find the volume of a cone cut parallel to its base. The smaller radius cannot exceed the larger radius.
V = πh(R²+Rr+r²)/3
Worked example
Show example inputs and result
Larger radius: 5 · Smaller radius: 3 · Vertical height: 6.
- Volume
- 307.87608005
Questions and answers
Why are some results rounded?
Results display up to 8 decimal places. Calculations use the unrounded values; very small values use scientific notation. JavaScript floating-point arithmetic can introduce tiny rounding differences.
Are my inputs sent to a server?
The calculator processes inputs in your browser. Its code does not send your values to a server.
Method reviewed: October 8, 2026 · Methods & accuracy