Fence Calculator: Materials, Posts, and Cost (Wood, Vinyl, Chain Link)

A fence install looks simple until you start counting parts. A 100-foot wood fence isn’t “100 feet of fence” — it’s 13 posts, 26 rails, ~150 pickets, 13 bags of concrete, hundreds of fasteners, and one or two gates with their own hardware. Miscount any of those and you’re making a second Home Depot trip in the middle of a weekend project. The Fence Calculator takes your run length, fence height, and material choice and returns a complete shopping list with quantities and an estimated material cost. Here’s how to use it well, what each material actually costs in 2026, and where the gotchas hide.

Last updated: April 2026

What You Need to Know Before Calculating

Three numbers drive everything:

• Total run length in linear feet (the perimeter of fence you’re installing)
• Fence height — standard residential heights are 3, 4, 5, 6, and 8 feet (privacy fences are usually 6 ft, decorative fences 3–4 ft)
• Number and width of gates — single gate (3–4 ft wide) or double gate for vehicle access (8–12 ft wide)

Two more inputs that matter for cost but not engineering:

• Material type — pressure-treated wood, cedar, redwood, vinyl, chain link, aluminum
• Post spacing — standard is 8 feet between posts; tighter spacing (6 ft) costs more but holds up better in wind/heavy panels

The Fence Calculator takes these inputs and returns: total post count, rail count, picket count (for picket fences), bags of concrete, fasteners, gate hardware, and a complete materials cost estimate.

Material Choices: Cost, Lifespan, and Maintenance

Pressure-Treated Wood ($15–$25/linear foot installed)

The default budget choice. Pressure-treated pine is rot-resistant, holds stain or paint well, and is widely available at any home improvement store. Lifespan: 15–20 years with annual maintenance (re-staining every 2–3 years).

Pros: Cheap, customizable, repairable plank by plank.

Cons: Wood moves with weather (warps, twists, splits over time), needs maintenance, has a finite lifespan.

Cedar ($25–$40/linear foot installed)

Mid-tier wood option with naturally rot- and insect-resistant properties. Doesn’t need pressure treatment. Weathers to a silver-gray over time (which some homeowners want, others stain to prevent).

Pros: Better appearance, more dimensionally stable than pine, can last 20–30 years.

Cons: Significantly more expensive than pressure-treated pine.

Vinyl ($30–$55/linear foot installed)

The premium “set it and forget it” option. White or tan vinyl panels that snap into vinyl posts. Lifespan: 30–50 years. No painting, staining, or sealing required. Hose off when dirty.

Pros: Zero maintenance, extremely long lifespan, won’t rot or warp.

Cons: Expensive upfront, can crack in extreme cold, can’t be easily customized or repaired (replace whole panels).

Chain Link ($10–$20/linear foot installed)

The cheapest fully functional option. Galvanized or vinyl-coated steel mesh on metal posts. Lifespan: 25+ years.

Pros: Cheapest per foot, durable, no maintenance, allows light/visibility through.

Cons: Provides no privacy or noise barrier, less attractive than other options.

Aluminum or Wrought-Iron Style ($30–$60/linear foot installed)

Decorative metal fencing — black powder-coated aluminum panels mimicking wrought iron, or actual wrought iron for high-end installs. Lifespan: 30+ years.

Pros: Distinctive appearance, never warps, low maintenance.

Cons: No privacy, expensive, custom-cut panels for non-standard runs cost extra.

Post Spacing: Why 8 Feet Is the Standard

Standard fence posts are spaced 8 feet on center because that’s the length of standard fence rails (also called “stringers”) sold at home improvement stores. Spacing posts at 8 feet means every rail is one piece, no cutting required, no waste. Spacing them at 6 or 10 feet means every rail must be cut to length — doable but slower and slightly wasteful.

When tighter spacing makes sense:

• Heavy privacy panels (6 or 8 ft tall solid wood/vinyl) catch a lot of wind. 6-foot post spacing reduces stress on each post and prevents leaning over time.
• Sloped terrain often requires custom spacing to follow the grade.
• Historic district or HOA-mandated aesthetic standards sometimes specify post spacing.

The calculator defaults to 8 ft but lets you adjust. The post count it returns includes corners, ends, and gate posts (which are usually beefier — 6x6 instead of 4x4 for wood fences).

Concrete Per Post: The Number People Forget

Every fence post needs concrete in the hole to keep it from leaning over time. The standard:

• 4x4 wood post in a 36”-deep hole: 1.5–2 bags of 60 lb premix concrete per post
• 6x6 wood post (gates, corners) in a 42”-deep hole: 2.5–3 bags per post
• Vinyl/aluminum metal post in a 30”-deep hole: 1–1.5 bags per post
• Chain link post in a 24–30” hole: 1 bag per post

For a typical 100-foot wood privacy fence with 13 posts at 8-ft spacing, that’s 20–26 bags of concrete — nearly half a pickup truck’s worth. The Fence Calculator includes this in the materials list automatically. For more granular concrete math (driveways, patios, footings beyond fences), the Concrete Calculator handles every project type.

Hidden Costs People Forget

Permits ($25–$200)

Most municipalities require a fence permit for fences over 4 ft tall, fences within front-yard setbacks, or fences along property lines. Check your local code office. Permitting takes 1–2 weeks — build it into your timeline.

Property Survey ($300–$800 if you don’t already have one)

If you’re fencing along a property line, you need to know exactly where that line is. Building 6 inches over the line into a neighbor’s yard is one of the fastest ways to start a long-running dispute. If you have an existing survey from when you bought the house, use that. If not, get one before digging.

Hardware Beyond Posts and Pickets

The Fence Calculator includes hardware totals, but be aware that fasteners, post caps, gate hinges, gate latches, and concrete bag costs can add up to 10–20% of materials cost. Don’t budget “just the wood” — budget the whole package.

Tool Rental ($75–$200)

For a longer fence, you’ll want a powered post-hole digger or auger rental. Hand-digging 13 holes is technically possible but adds 6–8 hours of brutal work. Most home improvement stores rent augers for $75–$100/day.

Removal of Old Fence

If you’re replacing an existing fence, removal and disposal adds time (or labor cost if hired out). A 100-foot wood fence demo takes one person 4–6 hours and produces a pile of debris that needs to be hauled away ($50–$200 dump fee or pickup truck haul).

DIY vs Hire Out

Fence installation is one of the more DIY-friendly major outdoor projects. The skill ceiling is low — if you can dig holes, mix concrete, and use a level, you can install a fence. The time ceiling is high — a 100-foot wood fence takes a single experienced person 16–25 hours over a weekend, or two people about 12–18 hours.

Hire out when: you have more than 200 linear feet, the terrain is significantly sloped or has rocky/root-bound soil, you need it done in a single day, or you don’t own/want to own the tools. Professional installation roughly doubles material cost (so a $1,500 materials job becomes a $3,000 turn-key job).

Plan Your Spring Install

Open the Fence Calculator, enter your run length, fence height, gate count, and material choice. You’ll get a complete materials list with quantities and a cost estimate in seconds — including the concrete and hardware that DIY guides love to forget. Pair with the Concrete Calculator for any post-setting math, and you’ve got the whole project planned before you load the truck.