c+CalcLantern

Cone frustum

Calculate the volume and area of a truncated cone.

How this works

Right circular frustum: V = πh(R² + Rr + r²)/3. Height is perpendicular, not slanted.

Example

Using the example inputs, volume (cubic units) is 205.250720035.

Radius1 (units)
5
Radius2 (units)
3
Height (units)
4
Volume (cubic units)
205.250720035

Scope and assumptions

Uses your inputs only; results are rounded for display.

OpenStax mathematics

Related calculators

Sphere

Pyramid volume

Cylinder

Cone

Rectangular prism

BUILT FOR CLARITY

Useful tools. Honest answers.

An original collection of calculators for everyday estimates and learning.

Calculations run in your browser. This site does not send your inputs to a server or serve advertising. Optional analytics runs only after you allow it. Results are estimates within each tool’s stated scope, not professional advice.

Financial, health and building-related tools have specific limitations. Check important decisions with a qualified professional. No live currency rates, tax tables or current price feeds are connected.