FENCE
FENCE POSTS
posts = length ÷ spacing + 1
ft
ft
RESULT
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Standard 8 ft post spacing. 2 bags of 60lb concrete per post is typical for a 6 ft fence. Add 1 to post count (you need posts on both ends).
About this calculator
This fence calculator estimates the materials you need for a privacy or picket fence: posts, panels, and concrete for setting the posts. Standard wood fence posts are spaced 8 feet on center; vinyl can be 6 or 8 feet depending on the panel system. Each post hole typically takes 1–2 bags of 60lb concrete (for a 4x4 post in a 10-inch-wide hole, 2 feet deep).
Common questions
How deep should fence post holes be?
At least one-third the post's above-ground height, plus 6 inches for gravel base. For a 6-ft fence (8-ft post), dig 2.5–3 ft deep. Below the frost line in cold climates — typically 36–48 inches in northern states.
Do I really need concrete on every post?
Yes for gates and corner posts (they take the most stress). For line posts, gravel-only or compacted soil works in some soils, but concrete lasts longer. Use 2 bags of 60lb fast-set concrete per 4×4 post in a 10-inch hole.
How much does a wood privacy fence cost?
Materials: $15–35 per linear foot for 6-ft cedar privacy fence (posts, panels, concrete, hardware). Installed: $25–55 per linear foot. A 100-ft run costs $1,500–5,500 depending on materials and labor market.