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Fence Calculator

Posts, rails, and panels for a straight fence.

Estimate the number of posts, rails, and panels needed to build a straight fence of any length and post spacing.

Marcus Laurent By Marcus Laurent
Published Last reviewed 1 min read

Inputs

m
m

Results

Enter values and click Calculate to see results.
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How to use this calculator

  1. Fill in the inputs above using the units you already have.
  2. Values update automatically as you type — no submit button needed.
  3. Hover any result row for the underlying formula and intermediate values.

Formula

Sections = ⌈length / spacing⌉. Posts = sections + 1. Rails per section = 2 (top & bottom) by default.

In depth

Estimate the number of posts, rails, and panels needed to build a straight fence of any length and post spacing.