Vinyl thinks in sections, not pickets
Unlike wood, vinyl fencing is ordered as finished 6 or 8-foot sections with routed posts. Divide the run by the section length and round up — the last section gets cut down to fit, and the manufacturer's gate hardware fills the remainder. A 104-foot run in 6-foot sections is 18 sections: 17 full plus one trimmed.
Post types: count each
A vinyl run needs line posts between sections, a corner post at each turn, an end post at each terminating end, and a heavy gate post on each side of an opening. The section count gives you line posts; add the others from your layout sketch before ordering — routed posts can't be swapped after delivery.
Sources and standards
Where these figures come from
Every formula on this page is implemented from the published reference material below. Where a value depends on a regional code, the calculator lets you override it rather than assuming one jurisdiction.
- American Wood Council — span tables, lumber design values and the Wood Frame Construction Manual.
- APA — The Engineered Wood Association — panel span ratings and sheathing installation guidance.
Figures, formulas and reference tables last verified: 19 September 2026.