Cubic Inches of a Cylinder

in
in
Conversion

Calculate the volume of a cylinder in cubic inches.

Formula

V = π × (d/2)² × h
  • 1 US gallon = 231 cubic inches exactly.

Cubic Inches of a Cylinder Example

Inputs
  • Diameter: 4 in
  • Height: 12 in

π × (2)² × 12 = 150.796 cu in = 0.6527 gal

Frequently asked questions

How do I calculate the volume of a cylinder in cubic inches?
Enter the diameter and height of the cylinder in inches. The calculator applies V = π × (d/2)² × h to find volume in cubic inches.
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?
Since 1 gallon = 231 cubic inches exactly, this helps estimate container capacity in a more common unit.
When would I use this calculator?
This is useful for engine displacement calculations, small tank sizing, or precision manufacturing specs.