Fence Material Calculator

The fence material calculator builds a quantity list from your run length and chosen fence style. Start with the measurements shown for that style, then open the ordering settings if you know your stock lengths or waste allowance. It keeps posts, rail positions, boards, panels and wire separate so you can see what you’re ordering.

What the fence material calculator counts

The existing engine supports eleven styles, including wood picket or privacy, closeboard, panel systems, vinyl, composite, metal, chain link and agricultural wire options. It only shows inputs that apply to the selected assembly.

Measure the fence and choose the assembly

Your measurements need to match the assembly you have selected. Board width and gaps determine picket coverage, while closeboard needs the actual overlap between boards. If you’re using a proprietary panel or a different rail arrangement, the supplier’s dimensions and rail schedule take priority.

Fence height alone doesn’t establish the right rail count for every product, even when two finished fences look similar.

Posts, boards and rails formulas

A simple open run with S sections needs S + 1 posts. Rail positions equal sections × rails per section. Board quantities depend on usable coverage: a spaced board covers its width plus the chosen gap, while an overlapping board covers less than its full width.

The engine handles the selected style’s endpoint and overlap rules instead of treating every fence as a solid rectangle.

Worked example: a 48-foot wood fence

Take a 48-foot run divided into six 8-foot sections. With three rails per section, allow 7 posts and 18 rail positions. For 5.5-inch boards with no gap, the continuous coverage calculation gives 105 boards.

Adding 10% board waste gives 116 to order. Rail positions remain separate from purchased sticks because connections, cuts and stock lengths can change the purchase count.

Turn the list into an order

Your order depends on what’s included in each kit and how loose stock fits the openings. Complete panels may already contain rails and infill, so those components shouldn’t be bought twice. For loose rails, stock length and connection details matter because a short stick cannot fill a longer span without an approved splice.

Waste gives you spare purchasing quantity; it doesn’t make the installed fence longer.

Know what needs a separate layout

You can use the result for one straight, level run, then handle gates, corners and slopes with their own layout details. Optional footing quantities describe the dimensions you enter, rather than verifying a suitable foundation. Before you order, a comparison with the actual product’s pack contents helps catch missing posts, included rails or fittings that aren’t represented by an ordinary fence section.

Frequently Asked Questions