How this calculator works
Estimate the number of fence sections and posts for a straight or combined fence run. The result keeps spacing assumptions explicit.
Formula
Net fence run = total run − gate widths. Sections = ceiling(net run ÷ post spacing). Posts = sections + 1, with additional gate posts as needed.
Net fence run = total run − gate widths. Sections = ceiling(net run ÷ post spacing). Posts = sections + 1, with additional gate posts as needed.
Example
A 120 ft run at 8 ft spacing needs roughly 15 sections before accounting for gates and layout changes.
Reliability check
Draw each straight segment between corners, ends and gates. Calculate segment spacing separately; slopes, frost depth, wind exposure and local requirements determine the final post layout.
How to get a better estimate
- Corners, ends and gates often need stronger posts.
- Actual panel width may control spacing more than a nominal target.
- Call utility-location services before digging.
What the result means
Gate position determines how fence runs are divided, so the improved result shows a post range. Corners, ends, slopes, bracing, frost depth and local rules still require a real layout.