Cylinder Volume Calculator
Compute the volume of a cylinder: V = π × r² × h.
Calculator
Use the Cylinder Volume Calculator
Result
—
Formula
V = π × r² × h
Step-by-step
- 1
Enter radius and height
The circular base plus how tall it is.
- 2
Read the volume
Volume in cubic units.
Worked example
Example input: a: 2, b: 10
Result: 125.6637
Related tools
- Cone Volume
One third of a cylinder.
- Sphere Volume
(4/3)πr³.
Frequently asked questions
What is the cylinder volume formula?
V = pi x r-squared x h, the circular base area times the height. A radius of 2 and a height of 10 give 125.66 cubic units, exactly the example above: pi times 4 times 10.
How do I use diameter instead of radius?
Halve it first: a diameter of 6 is a radius of 3, so enter 3. The formula needs the radius from the center to the edge; feeding it the diameter would inflate the answer fourfold.
Why does the height enter once but the radius twice?
Because the base is a circle: its area already contains r-squared, and volume stacks that area up the height. Squaring comes from geometry, not from a wish to reward big radii.
What is the volume of a cylinder with diameter 10 and height 8?
About 628.32 cubic units. The radius is half the diameter — 10 → 5 — so V = π × 5² × 8 = 200π ≈ 628.3185. Enter radius 5 and height 8 above to reproduce it.