Composite Fence Calculator
Wood-look composite fence — no rot, no stain.
Composite mimics real wood with no splinters, rot or annual sealing. This calculator estimates panels, posts, gates and labor.
Standard: 6 ft
Calculation Results
Planning estimate — actual quotes vary
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📌 Composite mimics wood with no rot, splinters, or annual sealing.
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🛠️ How This Calculator Works
Counts panels by dividing length by panel width, adds end and gate posts, then totals materials and labor.
📐 Formula
Panels = ⌈length / panel width⌉📝 Example Calculation
150 ft, 6 ft panels at $220, posts at $65, 1 gate at $450, $18/LF labor: Panels = 25; Posts = 25 + 1 + 2 (gate) = 28; Concrete = 44 × 80 lb bags Materials = $5,500 + $1,820 + $264 + $450 = $8,034; Labor = $2,700 Total = $10,734 ($71.56/LF)
💡 Pro Tips from Fence Builders
- Composite costs 2× wood upfront but breaks even at 10–15 years.
- Buy a brand with at least a 25-year color warranty.
- Use specified composite-rated post brackets — wood brackets void warranty.
Composite fence cost by length
Worked with this calculator's default prices — $220 per 6 ft panel, $65 per post, 80 lb concrete bags at $6, and $18 per foot labor. Swap in your supplier's prices above for your own figure.
| Fence length | Panels | Posts | Total, no gate | Total, 1 gate | Per foot |
|---|---|---|---|---|---|
| 50 ft | 9 | 10 (12 with gate) | $3,626 | $4,224 | $73 – $84 |
| 100 ft | 17 | 18 (20) | $6,878 | $7,476 | $69 – $75 |
| 150 ft | 25 | 26 (28) | $10,136 | $10,734 | $68 – $72 |
| 200 ft | 34 | 35 (37) | $13,685 | $14,283 | $68 – $71 |
| 300 ft | 50 | 51 (53) | $20,195 | $20,793 | $67 – $69 |
The per-foot price falls as the run gets longer because the end post and gate are spread over more feet. A gate adds two posts and the gate itself — about $600 at these prices.
Composite vs wood fence cost
Installed rates for a 6 ft fence on flat ground, from the fence installation cost calculator, with typical lifespans:
| Material | Materials / ft | Labor / ft | 150 ft installed | Typical life | Cost per year |
|---|---|---|---|---|---|
| Pine (pressure-treated) | $12 | $12 | $3,600 | 15 yr | $240 |
| Cedar | $20 | $14 | $5,100 | 25 yr | $204 |
| Vinyl | $22 | $14 | $5,400 | 30 yr | $180 |
| Composite | $32 | $16 | $7,200 | 30 yr | $240 |
On purchase price alone composite costs about twice pine. What closes the gap is upkeep: a wood fence needs stain or sealer every few years — price it with the fence staining cost calculator — while composite needs only a wash. The full side-by-side is on the composite vs wood fence page.
How to calculate composite fence materials
- Panels: fence length ÷ panel width, rounded up. Most composite systems come in 6 ft or 8 ft sections.
- Posts: one per panel plus one to finish the run, plus two for each gate. Corners use a corner post in the same count.
- Concrete: a 10 in hole 30 in deep around a 5 in post takes about 0.93 cu ft — 1.6 eighty-pound bags per post. Check post depth for your frost line with the post depth calculator.
- Hardware: use the brackets and post sleeves the panel maker specifies; generic wood brackets usually void the warranty.
For a wood fence instead, the wood fence calculator counts pickets, rails and posts, and the fence cost per foot calculator compares every material on one screen.
❓ Frequently Asked Questions
Is composite fencing worth it?
Yes if you plan to stay 10+ years — zero maintenance, no fading, no splinters, lasts 25–30 years.
Can composite fence panels expand?
Yes — leave 1/8 inch expansion gaps per manufacturer specs to prevent buckling in heat.
How much does a composite fence cost per foot?
Roughly $35 to $75 per linear foot installed, depending on the brand, height and how much of the work you hire out. This calculator's defaults ($220 per 6 ft panel, $65 posts, $18 per foot labor) land at about $68 per foot for a 150 ft run with no gate and $72 with one gate. The site's install cost calculator uses a lower-end $48 per foot for a 6 ft composite fence ($32 materials, $16 labor).
How many composite panels and posts do I need?
Divide the run by the panel width and round up for panels, then add one post for the end and two for every gate. A 150 ft fence in 6 ft panels takes 25 panels and 26 posts; add a gate and it is 28 posts. Each 10 by 30 inch hole holds about 0.93 cubic feet of concrete around a 5 inch post, roughly 1.6 eighty-pound bags.
Is a composite fence cheaper than wood?
Not up front. At 6 ft tall the install cost calculator puts pine at about $24 per foot, cedar $34 and composite $48, so a 150 ft run is about $3,600, $5,100 and $7,200. Spread over a typical 15, 25 and 30 year life that is roughly $240, $204 and $240 a year — before the staining and board replacement that wood needs and composite does not.
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