Use the product’s actual panel width—not its nominal label. The post result is a straight-run baseline; corners, gates, changes in grade, and separate runs require explicit additional posts.
01 / Formula
How this is calculated
Panels = ceiling((run − gate openings) × (1 + allowance %) ÷ panel width)02 / Assumptions
What the estimate assumes
- ✓The fence is measured along the installed path.
- ✓Each gate opening uses the entered clear width.
- ✓Extra posts cover corners, gates, and split runs beyond the straight-run baseline.
03 / Worked example
See the math in context
A 120-ft run with one 4-ft gate leaves 116 ft. At 8 ft per panel, that is 15 panels before allowance and layout adjustments.
04 / Guidance
Lay out before ordering
Mark every end, corner, gate, and change in direction. Divide the project into straight runs, verify actual product dimensions, and decide how partial bays will be handled.
05 / Guidance
Panels do not always trim equally
Some systems allow field-cut panels; others require a planned bay, bracket, or custom width. Confirm the product system before treating a rounded panel count as a final order.
Questions
Frequently asked
Do fence prices or dimensions have universal defaults?+
No. Product dimensions, labor, access, soil, wind exposure, finish, gates, permits, and local markets vary. Enter the measurements and current quotes for your project.
Does the result replace a site plan or product instructions?+
No. Treat it as a planning estimate. Confirm boundaries, utilities, easements, local rules, structural requirements, and the manufacturer’s instructions before work begins.
How should I handle corners and gates?+
Measure each straight run separately. Count end, corner, and gate posts as terminal posts, and subtract actual gate openings from fence fabric or panel length.