Quick answer
Estimate fence posts and sections from total run length and maximum planning spacing between posts. Use the working RenoMetric calculator below for the actual estimate, then use this page to check assumptions, package rounding and project-specific considerations.
Open the working Fence calculator
Formula
Worked planning example
A 100 ft straight fence planned around 8 ft sections needs at least 13 sections, which means about 14 line/end posts before gates and corners.
Common uses
- Privacy fences
- Garden fences
- Straight fence runs
- Early material lists
How to get a better estimate
Measure the actual project rather than relying on listing dimensions. For irregular spaces, split the surface into simple measurable sections and add the results. Use the exact product label for package coverage, yield, density or square-foot coverage whenever it is available.
Keep waste and package rounding as separate steps. Waste covers cuts, breakage, pattern matching and unavoidable offcuts. Package rounding reflects the fact that many materials are sold only in complete bags, boxes, bundles or cans.
Before you buy: this page is a planning guide, not a contractor quotation or structural design. Verify final quantities with the product manufacturer, supplier or installer when project conditions could materially change the result.
Fence Post Calculator FAQ
Do corners need extra posts?
Corners, gates, changes in direction and end conditions can change the post count. Treat each fence run separately.
Is 8 ft spacing always acceptable?
No. Spacing depends on the fence system, wind, materials, soil and local requirements. Use manufacturer or professional guidance.
Does this calculate post-hole depth?
No. Hole diameter and depth are structural and site-specific considerations that require appropriate local guidance.