Fence Calculator

Estimate the materials needed for a wood or vinyl panel fence.

Calculator

💰 Optional: Price Your Project

Material Estimate

Fence Panels: 0
Line Posts: 0
Horizontal Rails: 0

*Assumes 1 post per panel + 1 end post. Includes 5% waste not usually needed for pre-made panels but good for rails.

Read Guide: Layout Planning

Planning Your Fence Project

A fence serves multiple purposes: privacy, security, defining property boundaries, containing pets or children, and enhancing curb appeal. Proper planning ensures you buy the right materials in the right quantities.

Before you start:

  • Check property lines: Verify exact boundaries to avoid disputes
  • Call 811: Have utilities mark underground lines before digging
  • Check local codes: Many areas have height restrictions and setback requirements
  • Talk to neighbors: Courtesy and shared costs are possible
  • Consider gates: Subtract gate widths from total fence length

Types of Fence Materials

🪵 Wood Fencing

Cost: $12-35/linear ft installed

Lifespan: 15-20 years

Cedar, redwood, pressure-treated pine. Classic look, requires staining/sealing every 2-3 years.

⬜ Vinyl/PVC Fencing

Cost: $20-40/linear ft installed

Lifespan: 25-30 years

Low maintenance, never needs painting. Won't rot, warp, or attract termites.

🔗 Chain Link Fencing

Cost: $10-20/linear ft installed

Lifespan: 20+ years

Most affordable option. Great for security and pet containment. Can add privacy slats.

🏛️ Aluminum/Metal Fencing

Cost: $25-55/linear ft installed

Lifespan: 30+ years

Elegant wrought-iron look. Rust-resistant, low maintenance, but no privacy.

Fence Post Spacing Guide

Post spacing depends on your fence type and local wind conditions. Here are standard recommendations:

Fence Type Spacing Post Depth
Wood Privacy (6 ft tall) 6-8 feet 24-30 inches
Picket Fence (3-4 ft tall) 6-8 feet 18-24 inches
Chain Link 8-10 feet 24-36 inches
Vinyl/PVC 6-8 feet 24-30 inches

Rule of thumb: Post depth should be 1/3 of the above-ground height, with a minimum of 24 inches.

How to Calculate Fence Materials

Key Formulas:

Panels = Total Length ÷ Panel Width (round up) Posts = Number of Panels + 1 Rails = Panels × Rails per Section (usually 2-3)

Don't forget:

  • Corner posts count as shared between two runs
  • Gate posts should be 4x4 minimum (6x6 for heavy gates)
  • Add 10% extra materials for waste and errors

Example: 150 ft Privacy Fence

Scenario: You want to install a 150-foot wood privacy fence using 8-foot wide panels with 2 horizontal rails per section.

  1. Panels needed: 150 ÷ 8 = 18.75 → 19 panels (round up)
  2. Posts needed: 19 + 1 = 20 posts
  3. Rails needed: 19 × 2 = 38 rails
  4. Concrete per post: ~2 bags (50 lb) = 40 bags total

Estimated cost: 19 panels × $45 + 20 posts × $12 + 40 bags × $5 = $1,295 materials only

Frequently Asked Questions

How deep should fence posts be?

Posts should be buried 1/3 of their total length. For a 6-foot tall fence with 8-foot posts, bury 24-30 inches deep. In areas with frost, go below the frost line (36-48 inches in cold climates).

How much concrete do I need per post?

For a standard 4x4 post in a 10" diameter hole, you need about 1-2 bags (50 lb) of pre-mixed concrete. For 6x6 posts or deeper holes, use 2-3 bags. Fast-setting concrete is ideal for fence posts.

Which side of the fence faces the neighbor?

Traditionally, the "good side" (finished side without rails showing) faces outward toward neighbors. Some areas have "good neighbor" laws requiring this. Check local ordinances; some require the good side to face out.

How long does it take to install a fence?

DIY: A 150-foot fence takes 2-3 weekends for one person, or 2-3 days with a helper. Professional: 1-2 days for same length. Post hole digging is the most time-consuming part.

Do I need a permit for a fence?

Most areas require permits for fences over 6 feet tall. Front yard fences often have stricter rules (3-4 ft max). Always check with your local building department and HOA before starting.

How far from the property line should a fence be?

Most codes require fences to be 2-8 inches inside your property line. Building exactly on the line may require neighbor agreement. Get a survey if unsure—it's cheaper than moving a fence later.

Related Calculators & Guides

🧱 Concrete Calculator 🪵 Deck Calculator 📖 Privacy Fence Layout Guide