Fence Calculator

Posts, rails, and pickets needed for any wood fence.

Quick answer: Free online Fence Calculator. Estimate exact material counts for posts, rails, and pickets to build any standard wooden fence easily.

in
Posts needed16
Fence boards / pickets240
Rails (2 per section)32
Linear feet120 ft
NoteAdd 10% for waste and damaged boards.

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Estimate posts, rails, and pickets for a wood fence based on your total perimeter, post spacing, and board width.

How it works

  1. Enter the total linear feet of fence perimeter.
  2. Set the required post spacing distance.
  3. Input fence height and picket width to calculate full material counts.

Frequently asked questions

What post spacing should I use?

8 feet on center is standard for 6-foot privacy fences. Shorter spans (6 ft) are stronger but use more posts.

How deep should fence posts go?

One-third of total post length underground. A 6-foot fence needs 9-foot posts set 3 feet deep.

Do I need concrete for posts?

Recommended for gate posts and corners. Regular line posts can be set in compacted gravel for easier future replacement.

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