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

Enter a value for all fields

The **Volume of a Circular Column** calculator computes the volume (**V**) of a circular column * Concrete column or pier *based on the radius (**r**) and height (**h**) of the column.

**INSTRUCTIONS:** Choose units and enter the following:

- (
**h**) Height of the column or pier. - (
**r**) Radius of the column or pier. - (
**n**) Number of columns or piers.

**Column Volume (V):** The calculator returns the volume in cubic yards. However this can be automatically converted to other volume units via the pull-down menu.

The formula for the volume of a circular column is:

V = ?•r²•h•n

where:

- V = Volume of the column
- r = radius of the base
- h = height of the column
- n = number of columns or piers

**Related Calculators:**

Piers are often poured in tube moldings with rebar (See Rebar Calc) to provide structural strength.

For the DIY crowd that mixes their own concrete, vCalc provides a tool to convert volume in cubic units (cubic feet, yards or meters) to the number of bags of concrete in the following sizes:

- 40lb bags
- 60lb bags
- 80lb bags

Take the answer from this calculator and enter it in the Concrete Bags from Volume calculator (CLICK HERE).