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Fence Post Calculator

Count fence posts from real layout geometry — total length, post spacing, corners and gates — then size the concrete per hole, total bags and weight, U.S. pricing, and a downloadable PDF.

Check your local code and frost line — hole depth and spacing rules vary. Prices use 2024-2025 U.S. figures. For planning purposes only.

Layout & Posts
1 Fence Layout
ft
Total run around the yard, all sides added together
ft OC
ft
+1 ea
x
posts
Line + corner + gate posts, plus spare. Edit to enter a known count.
5%
Extra posts and concrete for slope, breakage and mistakes
2 Posts & Holes
ft
in
Rule of thumb: bury about 1/3 of the post below grade, and set below your frost line. Hole diameter is usually about 3x the post width.
3 Concrete & Cost
$
$
Post Estimate
Fence Posts Needed
—
Enter your length to begin
Line Posts —
Corner + Gate —
Concrete Bags —
Post & Hole Layout
Post spacing—
Fence sections runs between posts—
Line posts sections + 1—
Corner posts—
Gate posts—
Concrete per post—
TOTAL POSTS—
Concrete Weight —
Post Depth —
Total Cost —
Posts By Spacing
Total posts for your fence, by post spacing
Post Spacing Comparison — Your Fence
SpacingLine PostsTotal PostsConcrete Bags

For your 150 ft fence. Wider spacing means fewer posts, but check that your panels or rails span the gap.