Panels for 100 ft at 8 ft width?
14 panels with 10% waste buffer (15 posts for a straight run).
Fence materials are **panels = ceil(linear ft with waste ÷ panel width)** and **posts = ceil(linear ft ÷ post spacing) + 1**.
**Formula:**
Linear ft = Fence length × (1 + waste% / 100)
Panels = ceil(Linear ft ÷ Panel width)
Posts = ceil(Linear ft ÷ Post spacing) + 1
**Example — 100 ft run, 8 ft panels, 10% waste:**
110 linear ft → **14 panels**, **15 posts**
**Gate adjustment:** Subtract each gate opening width from total run length before calculating, **or** use a 15% waste preset for corners and gates. Each gate needs **two extra posts** (one on each side of the opening) — add these manually to the post count.
**Example — 120 ft run with one 4 ft gate:**
Net fence length = 120 − 4 = **116 ft**. With 10% waste: 127.6 linear ft → **16 panels** at 8 ft. Posts along the run ≈ 17, plus **2 gate posts** = **19 posts total**.
Concise answers for common searches — definitions, steps, and comparisons.
14 panels with 10% waste buffer (15 posts for a straight run).
Two posts per gate opening — one on each side.
Linear feet with waste divided by panel width yields panel count. Posts come from spacing intervals plus one end post. Gates require subtracting opening width and adding two posts per gate.
Formula
panels = ceil(linear_ft × (1+waste%) / panel_width); posts = ceil(linear_ft / spacing) + 1; add 2 posts per gateTap 100 ft run, 50×30 backyard perimeter, or enter length on the main form. Perimeter mode adds all four sides of a rectangular yard.
8 ft is standard for wood or vinyl privacy panels; 6 ft for picket. Post spacing usually matches panel width — one post per panel junction plus an end post.
Subtract gate opening width (typically 3–4 ft) from total run length before calculating, or switch to 15% waste. Add two posts per gate to the final post count.
10% for straight runs; 15% when you have corners, a gate, or uneven grade. Sloped yards may need 15–20%.
Results show panel count, post count, and linear feet with waste. Round up — partial panels are not sold.
Use Concrete Calculator for cubic feet or bags per post hole — typically 1/3 to 1/2 bag of 60 lb mix per standard 4×4 post hole.
Input
100 ft straight run · 8 ft panels · 8 ft post spacingOutput
14 panels · 15 posts110 linear ft ÷ 8 = 13.75 → 14 panels. Posts: ceil(110 ÷ 8) + 1 = 15.
Input
50×30 ft backyard · perimeter modeOutput
22 panels · 23 postsPerimeter = 160 ft. With 10% waste: 176 ft. 176 ÷ 8 = 22 panels.
Input
120 ft total · subtract 4 ft gate · 8 ft panelsOutput
16 panels · 19 posts (incl. 2 gate posts)Net fence = 116 ft. 116 × 1.10 = 127.6 linear ft → 16 panels. Run posts ≈ 17 + 2 gate posts = 19.
Input
Long property lineOutput
28 panels · 29 posts220 linear ft ÷ 8 = 27.5 → 28 panels.
Input
Front garden enclosureOutput
8 panels · 9 posts44 linear ft ÷ 6 = 7.33 → 8 panels.
Common real-world scenarios where this tool saves time.
110 linear ft with 10% waste, 8 ft panels = 14 panels, 15 posts. Standard side-yard wood or vinyl privacy fence.
160 ft perimeter (2×50 + 2×30) → 176 linear ft with 10% waste → 22 panels at 8 ft, 23 posts for a closed loop (no extra end post on a full perimeter).
Subtract gate: 116 ft net × 1.10 = 127.6 linear ft → 16 panels. Posts along fence ≈ 17, plus 2 gate posts = 19 total.
6 ft picket panels, 6 ft spacing, 10% waste: 44 linear ft → 8 panels, 9 posts for a front-yard picket run.
Step-by-step chains that connect related tools for common tasks.
From layout to materials list in four steps.
| Run length | Linear ft (10%) | Panels | Posts |
|---|---|---|---|
| 50 ft | 55 | 7 | 8 |
| 100 ft | 110 | 14 | 15 |
| 120 ft | 132 | 17 | 18 |
| 150 ft | 165 | 21 | 22 |
| 200 ft | 220 | 28 | 29 |
Posts = ceil(linear ft ÷ 8) + 1 for straight runs. Add 2 posts per gate separately.
| Layout | Waste % | When to use |
|---|---|---|
| Straight run | 10% | Single side yard, no gate |
| Corners + one gate | 15% | Typical backyard with walk gate |
| Sloped yard | 15–20% | Stepped panels or extra cuts |
| Multiple gates | 15%+ | Subtract each gate width; add 2 posts per gate |
| Material | Typical panel width | Post spacing | Notes |
|---|---|---|---|
| Wood privacy | 8 ft | 8 ft | Pre-built sections from lumber yard |
| Vinyl privacy | 8 ft | 8 ft | Pre-assembled panels — same count formula |
| Wood picket | 6 ft | 6 ft | Shorter sections, more posts per 100 ft |
| Chain link | 10 ft | 10 ft | Enter actual fabric width from supplier |
| Gate width | Action | Extra posts |
|---|---|---|
| 3 ft walk gate | Subtract 3 ft from run length | +2 posts |
| 4 ft walk gate | Subtract 4 ft from run length | +2 posts |
| 10 ft double drive | Subtract 10 ft from run length | +2 posts |
| Unsure of width | Use 15% waste; verify before order | +2 per gate |
Mark utility lines before setting posts along property lines — required in most US states.
Use Concrete Calculator for post-hole volume — 8–10 in diameter holes, 24–30 in deep for 4×4 posts in frost zones.
Place 4–6 in of crushed stone at the bottom of each post hole for drainage — see Gravel Calculator for base volume.
Posts = sections + 1 for a straight run — always count a post at the run end.
Gate spans do not need fence panels. Subtract each gate width (3–4 ft typical) from run length before calculating.
Each gate needs **two dedicated posts** — add 2 to your post count per gate opening.
Corners, grade changes, and cut panels need **10% minimum** extra linear ft; 15% with gates.
Check local code for fence height, setback, and permit rules before digging.
Enter the actual panel width from your supplier — 6 ft picket and 8 ft privacy use different counts.
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With 8 ft panels and 10% waste (110 linear ft): 14 panels and 15 posts for a straight run. Subtract gate width from 100 ft first if you have a gate, then recalculate.
Posts = ceil(linear ft ÷ post spacing) + 1 for a straight run. Example: 110 ÷ 8 = 13.75 → 14 sections + 1 end post = 15 posts. Add 2 posts per gate opening.
Subtract the gate opening width (usually 3–4 ft for a walk gate) from total run length before entering length, or use 15% waste as a rough buffer. Each gate requires two posts — add them to the calculated post count.
Subtract gate width first: 120 − 4 ft gate = 116 ft net. With 10% waste: 127.6 linear ft ÷ 8 ft panels = 16 panels. Posts along the run ≈ 17, plus 2 gate posts = 19 total.
8 ft for wood and vinyl privacy fence; 6 ft for picket sections. Chain-link fabric often comes in 10 ft widths — enter your supplier's actual panel width.
10% for straight runs; 15% when you have corners, a gate, or grade changes. Sloped yards may need 15–20%.
Perimeter adds all four sides of a rectangle (2×length + 2×width). Run length is one straight side — use this for a single property-line fence.
A typical 4×4 post in an 8–10 in diameter hole, 24–30 in deep uses about 1/3 to 1/2 bag of 60 lb concrete mix per hole. Use Concrete Calculator with your hole diameter and depth.
4–6 in of crushed stone at the bottom of each hole improves drainage and reduces frost heave. Use Gravel Calculator for base stone volume separately from post concrete.
Same math — enter panel width from your supplier (usually 8 ft for both pre-built privacy styles).
Fence suppliers sell whole panels only. Always round up — a 13.75 panel result means order 14 panels.
Perimeter = 2×50 + 2×30 = 160 ft. With 10% waste: 176 linear ft ÷ 8 ft panels = 22 panels. Post count for a closed loop follows the same spacing — verify gate deductions separately.
Fence dimensions stay on your device — EverydayTools does not upload run lengths or layout inputs to external servers.
Material estimates only — verify setbacks, height limits, HOA rules, and permit requirements before building. Not professional surveying or contracting advice.
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Reviewed on 2026-09-01.
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Privacy fence sections
Pre-built sections are often 6 ft or 8 ft
Typically matches panel width — one post per panel end