By Zencalcy Editorial TeamLast reviewed About us
Vinyl fence is bought as modular panels that slot into posts, so the count is driven by panel width rather than picket count. Most systems use 8 ft panels with a post at each joint; a gate replaces one panel and usually needs two heavier posts.
Panels, posts and rails for a vinyl privacy fence.
Panels = ⌈run ÷ panel width⌉ Posts = Panels + 1 Rails = 2 × Panels (or 3 for a 6 ft fence)
Post count assumes posts shared between panels, which is how vinyl systems are built. Add one extra post per gate and use the gate kit's own posts. Fence runs are usually set out so the last panel is trimmed rather than the first.
| Symbol | Meaning |
|---|---|
| L | Total fence run. |
| w | Panel width. |
| N | Panels required. |
100 ÷ 8 = 12.5, so 13 panels and 14 posts. At $120 per panel and $35 per post the material is about $2,050 before gates.
Continue with the Gravel Calculator, Sand Calculator, Rock Calculator, or the River Rock Calculator — or browse more materials & quantities and all construction calculators.
Fourteen 8 ft panels give 14 posts including both ends, plus extra heavy posts if you add a gate.
Results use standard construction estimating arithmetic: volumes from measured area and depth, unit weights from published material densities, and code-referenced spans or clearances where the page names a code. Quantities are rounded up to whole saleable units and include the stated waste allowance. These tools are planning aids, not structural design, and do not replace a licensed engineer, a local code check, or a contractor's site measurement.
Reference material used to build and check this calculator:
Last reviewed: September 2026. See how we build and check every tool on the about page.
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Content updated: September 2026