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How Many Fence Posts Do I Need?

Post count is the backbone of a fence estimate — it drives your digging, concrete and hardware. Get the spacing right and everything downstream lines up.

Quick answer: Posts = (total length ÷ spacing) rounded up, + 1 for the end, + 1 per corner and per gate. A 150 ft run at 8 ft spacing ≈ 20 posts.

The spacing rule

Standard post spacing is 6–8 ft. Wood privacy fences usually go 8 ft; heavier panels, high wind areas, or chain-link with tension often go 6–8 ft as well. Divide the total length by your spacing, round up, and add one post to close the last section.

Add for corners, ends and gates

Every corner and every fence end needs its own post, and each gate needs a post on both sides (often heavier, set deeper in more concrete). These extras are the most commonly forgotten line items — the fence calculator adds them for you once you enter gates and corners.

From post count to concrete and cost

Once you have the post count, the rest follows: concrete per post, rails or panels between posts, and pickets across the run. Feed it into a priced estimate to turn the count into a client-ready number.

Open the fence calculator →

FAQ

How far apart should fence posts be?

Most fences use 6–8 ft spacing. Wood privacy fences commonly use 8 ft; heavier or high-wind installs tighten to 6 ft.

Do gates need extra posts?

Yes — a gate needs a post on each side, and gate posts are usually larger and set deeper in more concrete to carry the swing load.

How do I count posts for corners?

Add one post per corner and one per fence end on top of the evenly spaced line posts.

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