Fence Material Calculator

About the Fence Material Calculator

Building a wood fence is one of the most common residential construction projects. Whether you're installing a privacy fence, picket fence, or ranch-style fence, getting the material quantities right is essential for budgeting and ordering. Running short means a trip back to the lumber yard; ordering too much wastes money.

This calculator estimates posts, rails, pickets, concrete, screws, and caps based on your fence length, height, and style. Standard wood privacy fences use 4×4 posts at 8-foot spacing, 2×4 rails (horizontal), and 1×6 or 5/8×6 pickets (vertical boards).

Whether you're building a full privacy fence, a decorative picket fence, or a simple post-and-rail design, this calculator provides a complete material list for ordering from your lumber supplier.

When This Page Helps

Fence projects involve multiple materials (posts, rails, pickets, concrete, hardware) that all need to be estimated together. It gives a complete material list from simple measurements, saving time and preventing ordering mistakes.

How to Use the Inputs

1. Enter the total fence length in feet.
2. Set the fence height (4–8 feet typical).
3. Choose post spacing (6 or 8 feet).
4. Enter the picket width and gap.
5. Review the complete material list.
6. Estimate cost based on your local lumber prices.

Example Calculation

Tips & Best Practices

• Use pressure-treated posts rated for ground contact (UC4A or UC4B).
• Set posts in concrete at least 1/3 of the total post length deep.
• Pre-stain or seal all lumber before installation for best longevity.
• Use 3-inch exterior screws (not nails) for pickets — they hold better.
• Alternate picket boards heart-side-out to reduce cupping.
• Check property lines and setback requirements before building.

Fence Styles and Material Differences

Privacy fence: 6-ft tall, pickets tight together, most material. Picket fence: 3–4 ft tall, spaced pickets, less material. Semi-privacy: 6-ft tall with spaced boards, moderate material. Post and rail: no pickets, fewest materials.

Estimating Fence Hardware

Budget 12‒16 screws per section (2 per rail connection, 2 per picket per rail). Use 3-inch exterior deck screws or ring-shank nails. Post caps add $3–$10 each. Hinges and latches for gates add $20–$80 per gate.

Gate Planning

Plan gate locations before ordering materials. Single walk gates are 3–4 ft wide. Double drive gates are 10‒16 ft wide. Gates need heavier posts (6×6) and stronger hardware. Subtract gate openings from fence length for material calculations.

Fence Longevity Tips

Apply stain or sealant every 2–3 years. Keep vegetation trimmed away from the fence. Repair damaged boards promptly to prevent further deterioration. Keep sprinklers from hitting the fence directly. Well-maintained wood fences last 15‒25 years.

Frequently Asked Questions

• How far apart should fence posts be?

  Standard post spacing is 8 feet for most residential fences. Use 6-foot spacing for tall privacy fences (over 6 ft), windy locations, or when using lighter posts. Rails span the distance between posts.

• How deep should fence posts be?

  Posts should be set 1/3 of their total length in the ground. A 6-ft fence with an 8-ft post needs 2–2.5 ft in the ground. Frost line depth is also a factor — check local codes.

• How many rails do I need?

  Fences up to 6 ft use 2 horizontal rails per section. Fences over 6 ft should use 3 rails. Rails are typically 2×4 lumber cut to the bay length (post spacing minus post width).

• What is a fence picket vs. a fence board?

  The terms are often interchangeable. Technically, pickets are the individual vertical boards that form the fence face. Common sizes: 1×6 (actual 5/8×5.5 in), 1×4 (3/4×3.5 in), and dog-eared or flat-top styles.

• How much does a wood fence cost?

  Materials cost $8–$20 per linear foot depending on wood type and style. Professional installation adds $10–$25 per LF. A 150-ft privacy fence costs $2,700–$6,750 in materials or $5,250–$11,250 installed.

• What is the best wood for fencing?

  Cedar: naturally rot-resistant, beautiful, $15–$25/LF. Pressure-treated pine: most economical, $8–$15/LF. Redwood: premium, extremely durable, $20–$35/LF. Composite: low-maintenance, $25–$45/LF.

• Do I need a permit for a fence?

  Most jurisdictions require permits for fences over 6 feet, and many require them for any fence. Permits also verify property lines, setbacks from streets and neighbors, and height restrictions. Always check before building.

• How much concrete per post?

  Each post hole typically uses 1–2 bags (50–80 lbs) of premixed concrete. A 10-inch diameter hole that's 24 inches deep uses about 1.5 bags. Fast-setting concrete is convenient for DIY installation.