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`SA_"oct" = 4 (1 + sqrt(2)) * "s" ^2 + 8 * "h" * "s" `

Enter a value for all fields

The **Surface Area of an Octagon Volume** calculator computes the surface area (**SA _{oct}**) of an octagonal shaped column or structure. A regular octagon

**INSTRUCTIONS: **Choose the length units you wish (e.g. feet or meters) and enter the following:

- (
**s**) This is the length of one side (**s**) of the octagon - (
**h**) This is the height (**h**) of the object

**Surface Area:** The calculator returns the surface area (**SA _{oct}**) in square meters. However, this can be automatically converted to other area units (e.g. square inches) via the pull-down menu.

A regular octagon is an eight sided polygon where all of the lengths of the sides and the interior angles are the same. Octagon shapes are used in many application and even in nature. Octagon shapes provide conveniences of straight sides with the general appearance of a more circular polygon.

The formula for the surface area of an octagon column is:

`SA = 4 (1 + sqrt(2)) * s^2 + 8 * h*s`

where:

- SA - Surface area of Octagon Column
- s - side length
- h - height of the column

- Area of an Octagon from its Side Length
- Length of a side of an Octagon from its Area
- Radius of an Octagon from its Area
- Radius of an Octagon from its Side Length
- Octagon in a Square or Box
- Volume of an Octagon shaped column
- Surface Area of an Octagon Column
- Mass or Weight of and Octagon Column

- Area of a Circle - Multiple functions to compute the area of a circle or portions of a circle.
- Area of Triangle - Three Sides
- Area of Quadrilateral - Four Sides
- Area of Pentagon - Five Sides
- Area of Hexagon - Six Sides
- Area of Heptagon - Seven Sides
- Area of Octagon - Eight Sides
- Area of Nonagon - Nine Sides
- Area of Decagon - Ten Sides
- Area of Hendecagon - Eleven Sides
- Area of Dodecagon - Twelve Sides
- Area of Polygon - Any number of sides (n).