How to estimate fence panels and posts
Use total fence length, panel width, and post spacing to estimate materials.
Fence estimates depend on layout assumptions: panel width, post spacing, and how you handle corners and gates. A quick plan on paper prevents ordering the wrong quantities.
This guide covers a straightforward approach for panel fences.
Step-by-step: fence math
- Measure total fence run length (sum each straight segment).
- Choose panel width (common panels are 6 ft or 8 ft).
- Compute panel count (length ÷ panel width), then round up for full coverage.
- Estimate posts: one more post than panels for a straight run, plus extras for corners and gates.
- Add gates, end posts, and hardware as separate line items.
Practical tips
- Corners, ends, and gates usually require special posts and hardware.
- Confirm local code or HOA rules before buying materials.
- Slopes change how panels fit; stepped installs can affect counts.
- Plan for waste and mistakes, especially if you’re cutting panels.
Want panels and posts instantly?
Use our fence calculator and share a link that keeps your inputs.
FAQ
How many fence panels do I need?
Divide total run length by panel width and round up, then adjust for gates and layout.
How many fence posts do I need?
For a straight run, it’s usually panels + 1. Add extra posts for corners, gates, and any breaks in the line.
Should I include a gate in the panel count?
Treat gates separately: subtract the gate opening from total run length, then compute panels for the remaining length.
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