How do I calculate how much fencing I need?

Measure the total perimeter you want to fence. Walk the boundary with a measuring tape or use a property survey. Subtract any openings (gates, existing walls). Enter the total length into the calculator along with your preferred fence type and height to get a complete material list.

How many fence posts do I need?

Divide your total fence length by the post spacing (typically 8 ft for wood, 10 ft for chain link), then add 1 for the end post. Add 2 extra posts for each gate opening. For example, a 150 ft fence with 8 ft spacing needs ceil(150/8) + 1 = 20 posts, plus 2 per gate.

How deep should fence posts be?

The standard rule is to bury 1/3 of the total post length, with a minimum depth of 24 inches (2 feet). For a 6 ft fence, use 8 ft posts buried 2.5 ft deep. In cold climates, posts should extend below the frost line to prevent heaving.

How much concrete do I need per fence post?

For a standard 4×4 post in a 10"-diameter hole at 24–30" deep, use 1–2 bags of 80 lb quick-set concrete per post. Deeper holes or larger posts (6×6) may need 2–3 bags. The calculator estimates this automatically based on your post depth.

What is the cheapest type of fence to install?

Chain link fencing is the most affordable type — roughly $8–$15 per linear foot installed (US, approx.). Pressure-treated pine is the cheapest wood option at $10–$18/lf for materials. For very large properties, wire fencing (barbed or welded wire) is even cheaper but less attractive.

What is the best fence material for durability?

Wrought iron lasts 50+ years with periodic repainting. Vinyl and composite last 20–30 years with almost no maintenance. Cedar and redwood last 15–25 years with regular staining. Chain link lasts 15–20 years. Pressure-treated pine has the shortest lifespan at 10–15 years.

How far apart should fence posts be?

Standard spacing is 8 feet on center for wood fences and 10 feet for chain link. Vinyl panel fences often use 6–8 ft spacing depending on panel width. Closer spacing (6 ft) is recommended for tall fences (8 ft+) or windy areas to prevent leaning.

Do I need a permit to build a fence?

Permit rules vary widely by jurisdiction. Many areas require a permit for fences over 6 feet tall or for any fence in a front yard, but some have no fence-permit requirement at all. HOAs often have their own rules about style, color, and height. Always check your local building department and HOA guidelines before starting.

How do I calculate fence boards for a privacy fence?

For a privacy fence with no gaps: divide the section width (post spacing) by the board width. Standard 5.5" boards with 8 ft spacing need ceil(96"/5.5") = 18 boards per section. Multiply by the number of sections and add 10% for waste. Board-on-board fences use about 30% more boards due to overlap.

How much does a wood privacy fence cost per foot?

A wood privacy fence (cedar) costs $15–$25 per linear foot for materials. Add $5–$15/lf for professional installation. A 150 ft cedar privacy fence typically runs $2,250–$3,750 for materials or $3,750–$6,000 installed.

How much does chain link fence cost?

Chain link fencing is the most affordable fence type at $8–$15 per linear foot for galvanized and $10–$20/lf for vinyl-coated. Professional installation adds $5–$10/lf. A typical 150 ft galvanized chain link fence costs $1,200–$2,250 for materials or $1,950–$3,750 installed (US averages).

Fence Calculator

Fence Type

Material

Naturally rot-resistant, classic appearance. Lifespan: 15–20 yrs.

Units

Total Fence Length (ft)

Fence Height (ft)

Gates

Gate width (ft)

Post spacing (ft)

Wastage & cost

Privacy Fence · Cedar Wood

1 gate

Total fence length

150linear feet

45.7 m876 sq ft area

Material breakdown

Posts, rails, pickets, concrete & hardware

Posts

4×4×9 ft · Hole: 10″ dia × 30″ deep

Rails / stringers

3 per section · 19 sections

Pickets / boards

377

18 per section

Concrete (80 lb bags)

2 bags per post

Hardware (screws / nails)

~798

Estimated fasteners, brackets & ties

Gates

4 ft wide each

Total fence area

876 sq ft

Useful for staining or painting estimates

What is a Fence Calculator?

Estimate posts, rails, pickets, panels, concrete, and total cost for any fence project

A fence calculator helps you estimate the exact materials needed to build a fence: the number of posts, rails (horizontal stringers), pickets or panels, concrete bags for post holes, and hardware. It eliminates guesswork and prevents costly over- or under-ordering for wood fence, chain link fence, vinyl fence, and more.

150 ft

Avg. Fence

Residential yard

8 ft

Post Spacing

Standard wood

6 styles

Panel Types

Privacy to chain link

10%

Waste Factor

Recommended minimum

Used by: homeowners planning DIY fence projects, contractors estimating material orders for bids, and lumber yards helping customers size purchases for privacy fences, picket fences, chain link fences, and board-on-board fences.

How to Use This Fence Calculator

Five simple steps to get your complete fence material list

Measure your fence perimeter

Measure the total linear feet (or metres) you want to fence. Walk the boundary with a measuring tape or wheel. Add all straight segments together, then subtract gate widths from the total.

Choose fence type, material, and units

Select your fence style (privacy, picket, chain link, board-on-board, shadow box, post & rail) and material (cedar, pine, vinyl, galvanized steel, aluminum, wrought iron, composite). Switch between imperial (ft/in) and metric (m/cm) as needed.

Set height, gates, and post spacing

Use the height presets (4 ft, 6 ft, 8 ft) or type a custom value. Set the number of gates — each gate adds 2 extra posts and gate hardware. Adjust post spacing if your local code or fence type requires wider or narrower spacing.

Review material breakdown

Get exact quantities: number of posts with post size, horizontal rails per section, pickets or panels count, concrete bags (80 lb), and estimated fasteners. The calculator auto-calculates concrete based on post depth, plus a waste factor for cuts and defects.

Toggle cost estimation (optional)

Turn on 'Wastage & cost' to reveal a cost panel. Enter your local material price per linear foot and labor rate. The calculator compares DIY material cost against professional installed cost with a full line-item breakdown.

How Fence Materials Are Calculated

Standard formulas used by contractors and DIY builders

The calculator uses standard fencing formulas trusted by contractors and DIY builders. All calculations account for gate openings, post spacing, rail count per height, and picket width with gaps. A waste factor is applied to rails and pickets for off-cuts and measurement variance.

Core Material Formulas

Posts = ⌈(Fenceable Length / Post Spacing)⌉ + 1 + (Gates × 2)

Rails = Sections × Rails per Section × Waste Factor

Pickets per Section = ⌈Section Width / (Picket Width + Gap)⌉

Concrete = Total Posts × Bags per Post (80 lb each)

•Fences under 5 ft use 2 rails per section; 5 ft+ use 3 rails.

•Privacy fences use 5.5″ boards with no gap. Picket fences use 3.5″ pickets with 2.5″ gaps.

•Post depth rule: 1/3 of fence height + 6″, minimum 24″. In cold climates, extend below the frost line.

Fence Material Comparison Guide

Compare cost, lifespan, and maintenance by material type

Cedar Wood

Cost/lf$15–$25Lifespan15–20 yrsMaintenanceStain every 2–3 yrsBest forPrivacy, aesthetics

Treated Pine

Cost/lf$10–$18Lifespan10–15 yrsMaintenanceStain every 1–2 yrsBest forBudget builds

Redwood

Cost/lf$20–$35Lifespan20–25 yrsMaintenanceSeal every 2–3 yrsBest forPremium look

Vinyl / PVC

Cost/lf$20–$35Lifespan20–30 yrsMaintenanceWash occasionallyBest forLow maintenance

Chain Link

Cost/lf$8–$15Lifespan15–20 yrsMaintenanceMinimalBest forSecurity, pets

Aluminum

Cost/lf$25–$40Lifespan20–30 yrsMaintenanceMinimalBest forOrnamental

Wrought Iron

Cost/lf$25–$50Lifespan50+ yrsMaintenanceRepaint 3–5 yrsBest forElegance, security

Composite

Cost/lf$25–$45Lifespan25–30 yrsMaintenanceWash occasionallyBest forEco-friendly

Material	Cost/lf	Lifespan	Maintenance	Best For
Cedar Wood	$15–$25	15–20 yrs	Stain every 2–3 yrs	Privacy, aesthetics
Treated Pine	$10–$18	10–15 yrs	Stain every 1–2 yrs	Budget builds
Redwood	$20–$35	20–25 yrs	Seal every 2–3 yrs	Premium look
Vinyl / PVC	$20–$35	20–30 yrs	Wash occasionally	Low maintenance
Chain Link	$8–$15	15–20 yrs	Minimal	Security, pets
Aluminum	$25–$40	20–30 yrs	Minimal	Ornamental
Wrought Iron	$25–$50	50+ yrs	Repaint 3–5 yrs	Elegance, security
Composite	$25–$45	25–30 yrs	Wash occasionally	Eco-friendly

Approximate US averages. Actual costs vary by region, supplier, and project specifics.

How to Calculate Linear Feet for a Fence

Measuring your fence perimeter correctly

Linear feet (or linear metres) is simply the total length of the fence line. Unlike square footage, which measures area, linear feet measures the distance along a straight line. For a fence, you measure the perimeter of the area you want to enclose.

How to measure

Walk the property boundary with a measuring tape or measuring wheel.

For a rectangular yard, add Length + Width + Length + Width = total linear feet.

For irregular shapes, measure each straight segment and add them together.

Subtract the width of any existing walls or openings you won't fence.

Subtract the width of each planned gate — gates replace fence sections but require their own posts.

Tip: Use a property survey or Google Maps measuring tool if you don't have a measuring wheel. Always add 5–10% extra to your total length for waste and measurement error.

Fence Material Estimates by Type

How posts, rails, and pickets vary by fence style

Wood Privacy Fence

Uses 5.5″ boards with no gaps for complete privacy. Posts spaced 8 ft apart, 3 horizontal rails for fences 5 ft and taller. A 150 ft cedar privacy fence needs roughly 20 posts, 57 rails, and 342 pickets before waste.

Wood Picket Fence

Uses 3.5″ pickets with 2.5″ gaps between them. Posts spaced 8 ft apart, 2 rails for 4 ft height. A 100 ft pine picket fence needs roughly 14 posts, 26 rails, and 340 pickets before waste.

Chain Link Fence

Uses metal mesh panels or rolls instead of individual pickets. Posts spaced 10 ft apart — wider than wood fences. A 200 ft galvanized chain link fence needs roughly 21 posts, 20 panels, and 42 bags of concrete before waste. Chain link is the most affordable fence type at $8–$15 per linear foot for materials (US, approx.).

Vinyl / PVC Fence

Typically comes in pre-assembled panels rather than individual pickets. Posts spaced 6–8 ft apart depending on panel length. A 150 ft vinyl privacy fence needs roughly 20 posts and 19 panels. Vinyl costs $20–$35 per linear foot for materials (US, approx.) but requires almost no maintenance for 20–30 years.

Board-on-Board Fence

Uses overlapping 5.5″ boards — each board overlaps the next by about 1.5″. This creates full privacy with a premium staggered look. Uses ~30% more boards than a standard privacy fence. Posts spaced 8 ft apart with 3 rails. Excellent for wind resistance since the overlapping design allows air to pass through gaps between boards.

Fence Cost Formula

How total project cost is calculated

The calculator estimates total project cost using a transparent formula based on five components: fenceable length, material rate, gate cost, labor rate, and waste factor.

Cost Formula Breakdown

Fenceable Length = Total Length − (Gates × Gate Width)

Material Cost = Fenceable Length × Material Rate × Waste Factor

Gate Cost = Gates × Gate Width × Material Rate × 1.5

Labor Cost = Fenceable Length × Labor Rate per LF

Waste Factor = 1 + (Waste % / 100)

Final Project Cost:

DIY Cost = Material Cost + Gate Cost

Professional Cost = DIY Cost + Labor Cost

Enter your local material and labor rates in the calculator’s cost section to get an instant personalized estimate. Toggle "Wastage & cost" on to reveal the cost inputs.

Post Spacing & Concrete Requirements

Recommended spacing, depth, and concrete per post type

Privacy (6 ft)

Post Spacing8 ftPost Depth2.5 ft (30″)Concrete/Post2 bags (80 lb)

Picket (4 ft)

Post Spacing8 ftPost Depth2 ft (24″)Concrete/Post1 bag (80 lb)

Post & Rail (4 ft)

Post Spacing8 ftPost Depth2 ft (24″)Concrete/Post1 bag (80 lb)

Chain Link (4 ft)

Post Spacing10 ftPost Depth2 ft (24″)Concrete/Post1 bag (80 lb)

Board on Board (6 ft)

Post Spacing8 ftPost Depth2.5 ft (30″)Concrete/Post2 bags (80 lb)

Shadow Box (6 ft)

Post Spacing8 ftPost Depth2.5 ft (30″)Concrete/Post2 bags (80 lb)

Fence Type	Post Spacing	Post Depth	Concrete/Post
Privacy (6 ft)	8 ft	2.5 ft (30″)	2 bags (80 lb)
Picket (4 ft)	8 ft	2 ft (24″)	1 bag (80 lb)
Post & Rail (4 ft)	8 ft	2 ft (24″)	1 bag (80 lb)
Chain Link (4 ft)	10 ft	2 ft (24″)	1 bag (80 lb)
Board on Board (6 ft)	8 ft	2.5 ft (30″)	2 bags (80 lb)
Shadow Box (6 ft)	8 ft	2.5 ft (30″)	2 bags (80 lb)

Post depth rule of thumb: dig to 1/3 of the fence height plus 6 inches, with a minimum of 24 inches. Always check local frost line requirements.

Common Fence Types & Their Costs

Regional pricing examples for popular fence styles

Privacy Fence (Cedar)

150 ft cedar privacy fence, 6 ft high: ~20 posts, 57 rails, ~342 pickets, 40 bags concrete. Material cost: $2,250–$3,750.

Picket Fence (Pine)

100 ft pine picket fence, 4 ft high: ~14 posts, 26 rails, 340 pickets. Material cost: $1,000–$1,800.

Chain Link

200 ft chain link, 4 ft high: ~21 posts, 20 panels, 42 bags concrete. Material cost: $1,600–$3,000.

Vinyl Privacy

150 ft vinyl privacy fence, 6 ft high: ~20 posts, 19 panels. Material cost: $3,000–$5,250.

Material counts shown before waste factor. Add 5–10% extra to account for cuts, splits, and measurement variance.

DIY vs Professional Fence Installation

When to build yourself and when to hire a contractor

40–60% savings

DIY installation eliminates labor charges entirely

DIY requires proper tools (post hole digger or auger, level, string line, saw) and typically takes a weekend or more for a 150 ft fence. Professional installation is recommended for tall fences (8 ft+), sloped terrain, or rocky soil. Contractors typically charge $5–$15 per linear foot for labor (US averages).

When to DIY

Flat terrain with soft soil
Standard 4–6 ft fence heights
You have or can rent a post hole digger
No underground utilities in the way

When to Hire a Pro

Sloped, rocky, or uneven terrain
8 ft+ fence heights or heavy materials (iron)
Local permits or HOA approval required
Large projects (300+ ft)

Common Mistakes to Avoid

Critical errors that lead to costly rework or safety issues

Not locating utilities first. Always call 811 (US/Canada) before digging post holes to avoid hitting gas, water, or electrical lines.

Shallow post holes. Posts set too shallow will lean or blow over in wind. Dig to at least 1/3 of the fence height plus 6 inches.

Skipping concrete. Posts set in dirt alone will shift over time. Use concrete for every post, especially in soft or sandy soil.

Ignoring property lines. Get a survey if you are unsure of your boundary. Building on a neighbor's property can result in forced removal.

Not accounting for gates. Each gate needs two extra posts and gate hardware. Forgetting gates leads to material shortages.

Zero waste factor. Always order 5–10% extra materials. Boards split, posts crack, and measurements are never perfect.

Ignoring local codes. Many areas have fence height limits (often 6 ft for backyards, 4 ft for front yards) and setback requirements.

Frequently Asked Questions

Common questions and detailed answers

Linear feet is simply the total length of your fence line. For a rectangular yard, add all four sides together: Length + Width + Length + Width = total linear feet. For L-shaped or irregular yards, measure each straight segment and add them. Subtract any openings like gates or existing walls. Use a measuring wheel, tape measure, or Google Maps measuring tool for accuracy. Always add 5–10% to your measurement for waste, cuts, and measurement error.

For pre-assembled panel fences (vinyl, some wood styles): divide your fenceable length by the panel width, then round up. A 150 ft fence with 8 ft panels needs ceil(150/8) = 19 panels. For chain link fences, the calculator models one panel per 10 ft post spacing section — a 200 ft chain link fence needs 20 panels. Subtract gate widths from the fenceable length before calculating. Add 1 extra panel for waste on smaller projects.

Divide the section width (post spacing × 12 for inches) by the effective picket width (board width + gap). For a privacy fence with 5.5" boards and no gap, each 8 ft section needs ceil(96"/5.5") = 18 boards. For a picket fence with 3.5" pickets and 2.5" gaps, each section needs ceil(96"/6") = 16 pickets. Multiply by the number of sections, then add 10% for waste. The calculator handles this automatically for every fence type.

Your complete material list depends on fence type, length, height, and post spacing. For a 150 ft cedar privacy fence (6 ft tall, 8 ft spacing), you'll need roughly: 20 posts (4×4×9 ft), 57 horizontal rails (2×4×8 ft), 342 pickets (1×6×6 ft), 40 bags of concrete (80 lb), and approximately 800 screws or nails. The calculator gives you exact quantities for your specific project — just enter your fence length and choose your style.

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Last updated Jul 8, 2026

Fence Calculator

Material breakdown

What is a Fence Calculator?

How to Use This Fence Calculator

How Fence Materials Are Calculated

Fence Material Comparison Guide

How to Calculate Linear Feet for a Fence

Fence Material Estimates by Type

Fence Cost Formula

Post Spacing & Concrete Requirements

Common Fence Types & Their Costs

DIY vs Professional Fence Installation

Common Mistakes to Avoid

Frequently Asked Questions

Embed Fence Calculator

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