Fence Post Calculator
Calculate a starting number of fence posts from total fence length and planned spacing. Add extra posts for corners, ends or gates when needed.
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How the fence post calculator works
Calculate a starting number of fence posts from total fence length and planned spacing. Add extra posts for corners, ends or gates when needed.
Posts = ceiling(fence length ÷ post spacing) + 1 + extra posts. The calculator is designed to give a useful first-pass material estimate while keeping the assumptions visible. For a purchase, compare the result with the product packaging or supplier quotation.
Common search terms for this tool include fence post calculator, how many fence posts do I need, fence post spacing calculator, post calculator for fence. The wording is included naturally so the page answers the same questions people ask when planning a project.
Frequently asked questions
What post spacing should I use?
Use the spacing required by your fence system or local installation guidance.
Do corners need extra posts?
Typically yes. Add them in the extra-post field along with gate posts.
Does this calculate hole depth?
No. Post-hole depth depends on fence height, soil, frost conditions and local requirements.
Can I use metres or feet?
Yes. Keep the fence length and spacing in the same unit system.