Privacy Fence Calculator

Calculate materials for **privacy fences** with no gaps between pickets. **Privacy fence calculator** with wind load and structural considerations.

Formula & Explanation

Privacy fences are solid (no gaps) to block sight lines and provide security. Pickets = ceil(fence_length_inches ÷ picket_width_inches) Because there are no gaps, picket count is higher than open fences. Example: 100-foot fence with 5.5-inch pickets = ceil(1200 ÷ 5.5) = 219 pickets Board feet calculation: Picket BF = (picket_width × picket_height × 12 × picket_count) ÷ 144 Rail BF = (rail_width × rail_thickness × 12 × rail_length) ÷ 144 Post BF = (post_size × post_size × 8 × 12 × post_count) ÷ 144 Total BF = Picket BF + Rail BF + Post BF Wind load consideration: Solid surfaces create more wind resistance. Use closer post spacing (6 ft instead of 8 ft) for structural integrity.

Assumptions

  • Privacy fences have ZERO gap between pickets (solid coverage)
  • Picket width is actual (e.g., 1×6 nominal = 5.5" actual)
  • Post spacing is typically 6 feet (tighter than open fences due to wind load)
  • Rails are typically 2×6 at top and bottom to support solid pickets and wind stress
  • Waste percentage 10-15% (accounts for waste, warping, and full-coverage precision)
  • Posts are 4×4 standard, 8 feet tall (4 ft above + 4 ft below ground)
  • Does not include concrete, fasteners, or finish (paint/stain)
  • Wind load: solid fences create drag; closer post spacing prevents buckling

Example Calculation

A 100-foot privacy fence with no gaps needs 18 posts (6-foot spacing for wind load) and 245 pickets (including 12% waste) totaling 1,063 board feet. This is significantly more material than an open fence due to full coverage.

Inputs

fenceLength:100
postSpacing:6
picketWidth:5.5
picketHeight:6
railsPerSection:2
wastePercent:12

Results

posts:18.00
picketsRequired:219.00
picketsWithWaste:245.00
boardFeetPickets:632.00
linearRailFeet:200.00
totalBoardFeet:1063.00

Privacy Fence Wind Load Ratings

postSpacingheightwindRatingnote
8 ft4 ftModerate (70 mph)Lighter duty
6 ft6 ftHigh (90+ mph)Standard residential
4 ft8 ftVery High (110+ mph)High wind areas

Frequently Asked Questions

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