Fence Post Spacing Calculator
Estimate fence posts, equal spans, actual post spacing, concrete bags and purchase cost across one or more straight fence runs.
Default project preview
13 posts
Actual spacing
8 ft
Net fence length
96 ft
Spans per run
12
Concrete bags
26
Calculator
Build the material order
Your order will appear here
Enter the project details and calculate a rounded material estimate.
Methodology
Transparent calculation
BuildMeter converts every input to a consistent internal unit, applies the selected allowance, and rounds products up to whole purchasable units.
Net length = total fence length − gate openings. Spans per run = round up (run length ÷ maximum spacing). Posts = total spans + one terminal post per run.
FAQ
Fence Post Spacing Calculator questions
Why is actual spacing less than the maximum?+
The calculator divides each run into equal spans that do not exceed the entered maximum.
Are gate posts included?+
Gate opening length is deducted, but specialized gate posts and hardware should be added according to the gate design.
Do corner posts need special treatment?+
Often yes. Corners and ends can need stronger posts, bracing or different foundations.