Fencing Needed for Polygon Area

The Fencing Needed for Polygon Area formula computes the length of the fence line based on the shape of the fenced in area (number of equal length sides - n) and the area (A).

INSTRUCTIONS: Choose units and enter the following

• (n) Number of equal length Sides in fenced area
• (A) Area inside Fence

Fence Perimeter Length (P): The calculator returns the perimeter of the area in feet.  The calculator also returns the length of the individual sides (s) in feet.  However, these can be automatically converted to compatible unit via the pull-down menu.  

The Math / Science

Basic math can be used to compute the length of fencing need to surround an area if you know the area (A) and the shape.  The shape is defined by the number of equal length sides.  For example a regular triangle has three sides, a square has four, a pentagon has five, etc.  All of these are regular polygons.   Enter your area and the number of sides that define the shape of your fencing area.

Fence Calculators

• Number of Posts and Rails: Computes the number of fence posts and rails needed for a length of wood fencing.
• Post and Rail Fence Cost Estimate : Computes material costs for post and rail fence based on the number of posts and rails (above) and unit cost pricing.
• Wire Fence Materials: Computes the materials needed for a high tension fence.
• Wire Fence Cost Estimate Computes the materials and costs of a high tension wire fence.
• Labor Cost for Posts : Computes the approximate cost of labor in digging and setting fence posts based on the length of the fence, uniform distance between posts, method of digging (by hand, power auger) and the hourly labor pay rate (DPH).
• Perimeter of a Rectangular Shaped Area computes the length of a fence perimeter in a rectangular shaped area base on the length (l) and width (w) of the area.
• Diagonal of Rectangle Area computes the diagonal measurement of a rectangular area.  This is useful in ensuring that your area has square corners.
• Three Sided Land Fencing: Computes the number of fencing segments or posts needed to go around a three sided fence area.
• Circular Fence Calc computes the diameter, number of posts, rails, perimeter and area of a circular shaped fenced area (paddock).
• Fencing Needed for Polygon Area: Computes the area and side length enclosed within a polygon (e.g. octagon) shaped area (paddock).
• Area Fenced in Polygon: Computes the area enclosed in polygon (e.g., 12 sided) fence area based on the length and number of individual sides.
• Fencing Needed for Circular Area computes the number of posts, number of sections, sides or panels, number of rail boards, perimeter and area of a ROUGHLY CIRCULAR shaped area (paddock) based on a diameter and length of sides. 
• Number of Posts needed for a Wood Fence: Computes the number of posts needed for a length of fence based on the spacing.
• Number of Rails needed for a Wood Fence: Computes the number of rails needed for a length of fence based on the length of the rails and number of rows.
• Garden Fence: Computes the number of T-posts and length of fencing needed based on the garden dimensions, separation of the T Posts and the length of the fencing in the flexible rolls.