Construction

Fencing Calculator

Calculate posts, pickets, rails, and costs for your fence project

Quick Answer:A 150 ft fence at 6 ft height with 8 ft post spacing needs approximately 20 posts, 38 rails, and 343 pickets in 2026. Total material cost for wood fencing averages $2,000-4,000.

Fence Specs

Fence Length (ft)

Fence Height (ft)

Post Spacing (ft)

Picket Width (inches)

Gap Between Pickets (inches)

Total Posts

Calculating... fence posts

Pickets Needed

Rails (2 per section)

Concrete Bags (for posts)

Est. Material Cost

Visual Comparison

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Expert Insight 2026 Pro Tip

In 2026, pressure-treated 4x4 posts cost $12-20 each while cedar posts run $18-35 depending on length. Always set posts at least 1/3 of total length below grade -- for a 6-foot fence, use 9-foot posts buried 3 feet deep. Use 2 bags of fast-setting concrete per post for the strongest hold, and let posts cure 24-48 hours before attaching rails. Check local building codes before starting -- many municipalities require permits for fences over 4 feet and mandate setbacks from property lines of 2-6 inches.

Frequently Asked Questions About Fencing

How do I calculate how many fence posts I need?

To calculate fence posts, divide the total fence length by the post spacing (typically 6-8 feet), then add 1 for the end post. For example, a 150-foot fence with 8-foot spacing needs 150 divided by 8 plus 1, equaling about 20 posts. Corner posts and gate posts should be included as additional posts. For wooden fences, post spacing of 8 feet is standard, while vinyl fencing may use 6-foot spacing. Each post should be buried at least one-third of its total length -- for a 6-foot fence, use 9-foot posts buried 3 feet deep for maximum stability.

How many pickets do I need for a fence?

To calculate pickets, divide the total fence length in inches by the combined width of one picket plus one gap. For standard 3.5-inch pickets with 1.75-inch gaps, each picket-gap unit is 5.25 inches. A 150-foot fence (1,800 inches) divided by 5.25 equals approximately 343 pickets. For a privacy fence with no gaps, simply divide the fence length in inches by the picket width. Always order 10-15% extra pickets to account for warped boards, knots, splits, and cutting waste, especially around gates and corners.

How much does a wood fence cost in 2026?

In 2026, a standard 6-foot privacy fence costs $15-35 per linear foot installed, depending on wood type and region. Pressure-treated pine is the most affordable at $15-22 per foot, while cedar ranges from $20-30 per foot, and redwood costs $25-35 per foot. Materials alone typically run $8-18 per linear foot. For a 150-foot fence, total costs range from $2,250-$5,250 for a DIY installation or $3,750-$8,250 professionally installed. Additional costs include gate hardware ($50-200 per gate), concrete for post footings, and stain or sealant for protection.