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`V = 1/2 pi r^2 h`

Enter a value for all fields

The **Volume of a Semicircle **calculator computes the volume of a semicircular shape based on the radius (r) and the height (h).

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

**Semicircle Volume (V)**: The calculator returns the volume in cubic meters. However, this can be automatically converted to compatible units via the pull-down menu.

The formula for the volume of a semicircle is:

where:

- V is the volume of the semicircle
- h is the height of the semicircle
- r is the radius of the semicircle

Volume of a uniformed shaped object such as an octagon column is derived by the following formula:

The formula above uses the area of a semi-circle.

For the volume of polygon based objects (columns), see the following:

- Semicircle Volume - half circle column
- Semicircle Radius - half circle column
- Semicircle Height - half circle column

- Triangular Volume - 3 sided regular column
- Square Volume - 4 sided regular column
- Pentagon Volume - 5 sided regular column
- Hexagon Volume - 6 sided regular column
- Heptagon Volume - 7 sided regular column
- Octagon Volume - 8 sided regular column
- Nonagon Volume - 9 sided regular column
- Decagon Volume - 10 sided regular column
- Hendecagon Volume - 11 sided regular column
- Dodecagon Volume - 12 sided regular column