`V = pi * "r" ^2 * "h" `

Enter a value for all fields

The Gallons in a Cylinder calculator computes the volume of a right circular cylinder in gallons from the height (h) and radius (r) of the base (see diagram).

INSTRUCTIONS: Choose units and enter the following:

• (r) radius of the circular base 
• (h) height of the cylinder

Gallons in a Cylinder (V):The calculator returns the volume in gallons.  However, this can be automatically converted to many other volume units (e.g. liters, cubic inches) via the pull-down menu. 

The Math

The formula for the volume of a cylinder is:

           V = ?•r²•h

where:

• V is the volume of the cylinder
• r is the Radius of the cylinder .
• h is the Height of the cylinder.

Cylinder Calculators

1. Compute the Lateral Surface Area (sides) of a Cylinder based on height and radius.
2. Compute the Total Surface Area of a Cylinder including the sides, top and bottom.
3. Compute the Volume of a Cylinder based on cylinder height and radius
4. Compute the Height of a Cylinder based on the volume and radius.
5. Compute the Radius of a Cylinder based on the volume and height.
6. Compute the Mass or Weight of a Cylinder  based on the volume and mean density of the cylinder.  
7. Compute the Density of a cylinder.
8. Compute the Lateral Surface Area of a Slanted Cylinder.
9. Compute the Volume of a Slanted Cylinder.
10. Compute the Weight or Mass of a Slanted Cylinder.
11. Compute the moment of inertia of a cylinder shaped object based around the central axis
12. Compute the moment of inertia of a  cylinder shaped object around the end of the cylinder
13. Compute the moment of inertia of a  cylinder shaped object perpendicular to the central axis.