Fence Calculator
Plan your fencing project with precision. Calculate posts, rails, pickets, panels, concrete, gates, hardware, and total cost for wood, vinyl, chain-link, aluminum, and composite fences.
A typical 150 LF, 3-sided privacy fence needs ~26–30 posts, ~9 bags of 80-lb concrete, and ~230 pickets (5.5″ picket, 2″ gap). For vinyl panels, expect ~25 panels at 6 ft spacing. Add 10% waste for wood, 5% for vinyl.
Standard vinyl privacy fence. Post spacing: 6 ft. Cost: $25–40/LF.
⚙️ Advanced Options (Terrain, Concrete, Holes, Pricing)
What This Fence Calculator Does
This Fence Calculator helps you estimate exactly how many posts, rails, pickets, panels, bags of concrete, and hardware items you need for your fencing project. It supports wood, vinyl, chain-link, aluminum, composite, bamboo, and agricultural fences.
The calculation features automatic post spacing based on fence type, corner/end/gate post counting, concrete volume with post displacement, picket pitch logic, and full material cost breakdowns including labor, permits, removal, and staining.
How to Use the Fence Calculator
- Select your preferred measurement system (Imperial feet or Metric meters) and target fence type. Selecting a fence type sets post spacing, rail count, and cost per linear foot automatically.
- Choose the fence height — taller fences require deeper post holes, more material, and higher costs.
- Select either the Perimeter / Fence Sections mode (total length × sides) or the Total Linear Feet mode (multi-section direct input).
- Enter your fence run length, number of sides, corners, and end posts. Use the Quick Add gate buttons to add walk gates, drive gates, or double gates.
- Optionally include additional features like post caps, lattice, trellis, or privacy slats.
- Optionally enter pricing for materials, posts, concrete, hardware, and labor to generate a complete financial estimate.
- Adjust the waste slider to configure your safety margin, then click Calculate Fence Materials.
📐 Formulas Used
- Posts = ⌈Net LF ÷ postSpacing⌉ + corners + ends + (gateCount × 2) + 1
- Concrete per hole = π × r² × depth − postDisplacement (cu ft)
- Pickets = ⌈(Net LF × 12) ÷ (picketWidth + picketGap)⌉ × (1 + waste/100)
- Rails = ⌈(Net LF ÷ railLength) × railCount⌉ × (1 + waste/100)
- Panels = ⌈Net LF ÷ panelLength⌉ × (1 + waste/100)
- Waste-adjusted quantities shown in results and summary.
Fence Type Coverage & Cost Chart
| Fence Type | Avg. $/LF | Post Spacing | Recommended Waste | Lifespan |
|---|---|---|---|---|
| Wood Privacy (6-ft) | $20–35 | 8 ft | 10% | 15–20 yrs |
| Wood Picket (3–4 ft) | $12–22 | 8 ft | 12% | 10–15 yrs |
| Wood Shadowbox | $25–40 | 8 ft | 12% | 15–20 yrs |
| Wood Split Rail | $8–15 | 10 ft | 8% | 10–15 yrs |
| Vinyl Privacy | $25–40 | 6 ft | 5% | 25–30 yrs |
| Vinyl Picket | $15–28 | 6 ft | 5% | 20–25 yrs |
| Chain Link (galv.) | $8–18 | 10 ft | 5% | 20–30 yrs |
| Vinyl-Coated Chain Link | $10–22 | 10 ft | 5% | 20–25 yrs |
| Aluminum Ornamental | $25–45 | 6 ft | 5% | 30+ yrs |
| Wrought Iron | $30–55 | 8 ft | 5% | 40+ yrs |
| Composite (Trex) | $30–50 | 8 ft | 8% | 25–30 yrs |
| Bamboo Rolled | $5–15 | 8 ft | 10% | 5–10 yrs |
| Barbed Wire | $2–5 | 12 ft | 5% | 15–20 yrs |
| Electric Fence | $1–3 | 16 ft | 5% | 10–15 yrs |
Common Fence Questions
How do I calculate how many fence posts I need?
What is the standard post spacing for a fence?
How much concrete do I need per fence post?
How deep should fence post holes be?
How many pickets do I need for a wood fence?
Should I include a gate in my fence estimate?
Pro Tips for Fence Installation
- Call 811 Before Digging: Always have underground utilities marked before you dig post holes. It’s free and prevents dangerous accidents.
- Check Property Lines + Setbacks: Verify your property boundaries and local setback rules. HOA approval may also be required before installation.
- Set Corner/End Posts FIRST: Establish corner and end posts first, then run a string line between them to ensure straight alignment for all intermediate posts.
- Use Gravel Base Under Concrete: Add 6 inches of gravel at the bottom of each post hole to improve drainage and prevent post rot.
- Stagger Panel Joints: If using panels, stagger the joints between adjacent sections for a more professional appearance.
- Account for Fence Height ABOVE Grade: Don’t bury panels or pickets — the fence height is measured from finished grade to the top.
- Pre-Treat Post Bottoms: Apply bitumen or wood preservative to the bottom of wood posts before setting to extend their lifespan by 5–10 years.
The Complete Guide to Estimating Fence & Costs
Fencing is one of the most visible and practical home improvements. A well-built fence adds privacy, security, curb appeal, and property value. Estimating the right amount of materials ensures you don’t run out mid-project or waste money on unused product.
Post Spacing & Why It Matters
Post spacing is the single most important design parameter for a fence. It determines structural integrity, wind load resistance, and material quantities. Wood fences typically use 8-ft spacing, vinyl panels use 6-ft spacing, and chain-link uses 10-ft spacing. Tighter spacing means more posts but stronger sections — especially important in high-wind areas or for tall privacy fences.
Concrete Volume & Hole Depth Standards
Properly set posts are the foundation of any fence. The standard rule: bury 1/3 of the post height plus 6 inches of gravel. For a 6-ft fence, that means a 30-inch hole depth. Hole diameter should be 3× the post width — 10 inches for a 4×4 post. Concrete volume per hole depends on depth and diameter: a 10-inch hole at 30 inches uses about 1.36 cu ft of concrete, or roughly 2–3 bags of 80-lb mix.
Material Cost Tiers (DIY vs Premium)
Fence material costs span a wide range. Economy options like barbed wire or basic chain-link run $2–8/LF. Mid-range wood privacy and vinyl picket fences run $15–30/LF. Premium materials like aluminum, wrought iron, and composite start at $30/LF and can exceed $50/LF for custom designs. Always factor in waste (5–15%) and consider the total cost of ownership — premium materials last 2–3× longer than economy options.
Hidden Costs (Permits, Removal, Finishing)
Beyond materials and installation, remember to budget for permits ($50–200), old fence removal ($300–800), and finishing costs like staining or painting ($1–4/LF). Delivery fees, soil compaction equipment rental, and post-hole auger rental can also add $100–300 to your total. Our calculator includes optional fields for all these to give you a complete financial picture.