Fence Post Spacing & Wind Load Calculator
Enter fence height, panel type, and wind exposure to get the maximum safe post spacing, footing depth, and how much concrete you need. Nothing uploaded.
Wind load ? per panel type
Max post spacing
Footing depth
Concrete volume
Post count for run length
Fence elevation
Max post spacing
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Footing depth
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Concrete per post
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Posts for run
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Total concrete
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Learn more about fence post spacing and wind loads
How far apart should fence posts be?
1.8-2.4m for a 1.8m fence in a normal wind zone with 100x100mm posts. In exposed or severe zones, spacing must be reduced. The calculator determines the safe maximum for your conditions.
How deep should a fence post be set?
Generally at least 1/3 of above-ground height. For 1.8m fence, at least 600mm deep. Deeper in soft ground or high wind zones. The calculator computes the correct depth.
Why do fences blow down in storms?
Posts too shallow, spacing too wide, or standard spacing used in exposed locations. Hilltops and coastal sites face 50-70% more wind force than sheltered suburban sites.