Cubic Feet of a Cylinder
Calculate the volume of a cylinder in cubic feet.
Formula
V = π × (d/2)² × h
- π ≈ 3.14159. 1 cu ft = 7.48052 US gal.
Cubic Feet of a Cylinder Example
Inputs
- Diameter: 4 ft
- Height: 5 ft
π × (2)² × 5 = 62.832 cu ft = 470.10 gal
Frequently asked questions
How do I calculate the volume of a cylinder in cubic feet?
Enter the diameter and height of the cylinder. The calculator applies V = π × (d/2)² × h to find volume in cubic feet.
What formula is used?
V = π × (radius)² × height = π × (d/2)² × h. This is the standard cylinder volume formula.
Why is the gallon conversion included?
Many applications (tanks, drums, pools) are sized in gallons. Since 1 cu ft = 7.48052 gallons, this helps estimate capacity.
Can I use inches or other units?
This calculator uses feet. Convert your measurements to feet first, or use a different unit converter.