Privacy Fence
Estimate materials for a privacy fence including posts, rails, pickets, and concrete volume. Free online privacy fence material estimator with quantity breakdown charts.
Post Dimensions (for concrete estimate)
About This Calculator
Our Privacy Fence Calculator helps homeowners, contractors, and DIY enthusiasts estimate the exact materials needed for building a privacy fence. Whether you are installing a backyard privacy screen, a garden boundary, or a property line fence, this tool calculates the number of posts, fence sections, horizontal rails, vertical pickets, and concrete volume required — saving time and preventing costly material shortages.
The calculator uses standard fence construction formulas: the number of posts is found by dividing the total fence length by the post spacing and adding one (rounded up). Each gap between posts forms one section or panel. Rails are calculated as the number of sections multiplied by the rails per section. Pickets are determined by converting the fence length to centimeters and dividing by the effective picket width (picket width plus gap). For a true privacy fence, set the picket gap to zero. Concrete volume is estimated based on the post dimensions, with the hole size set to three times the post width and one-third of the post height buried underground as per standard construction practice.
Regional Notes
India (IN): Fence dimensions are typically measured in meters. Common privacy fence heights range from 1.5 m to 2.0 m. Post spacing of 2.0-2.5 m is standard. Concrete for post footings is usually M20 grade, often hand-mixed on site. Standard wooden posts are typically 7.5 cm × 7.5 cm or 10 cm × 10 cm.
United States (US): Privacy fence dimensions are often in feet (1 ft = 0.3048 m). Standard post spacing is 6-8 ft. Common privacy fence height is 6 ft. Picket widths are typically 3.5 in or 5.5 in. Concrete is measured in 60 lb or 80 lb bags per post hole. Pressure-treated lumber is the most common material.
United Kingdom (UK): Fencing is measured in meters with typical post spacing of 1.8-2.4 m. Standard privacy fence heights are 1.8 m (6 ft). Concrete for posts is sold in 25 kg bags of post mix. Fence posts are commonly 7.5 cm × 7.5 cm (3 in × 3 in) treated timber. Feather-edge boards are a popular choice for privacy fencing.
Frequently Asked Questions
How many fence posts do I need for a privacy fence?
To calculate the number of fence posts, divide the total fence length by the post spacing and add one. For a 30 m privacy fence with 2.4 m post spacing: (30 ÷ 2.4) + 1 = 13.5, round up to 14 posts. Each section between posts forms one panel of your privacy fence.
What is the best post spacing for a privacy fence?
Standard post spacing for a privacy fence is 6 to 8 feet (1.8 to 2.4 meters). In metric countries, 2.0 to 2.5 m spacing is common. Closer spacing provides more structural strength, while wider spacing reduces material costs. For tall privacy fences (over 2 m), use closer spacing for stability.
How deep should privacy fence posts be buried?
A general rule is to bury at least one-third of the total post length underground. For a 1.8 m tall privacy fence, each post should be about 2.7 m long, with 0.9 m buried underground and secured with concrete. This ensures the fence is stable against wind loads and ground movement.
How many pickets do I need for a privacy fence?
To calculate pickets for a privacy fence, convert the fence length to centimeters and divide by the sum of picket width and gap. For a 30 m fence with 10 cm wide pickets and 0 cm gap (full privacy): 3000 cm ÷ 10 cm = 300 pickets. Always round up to ensure full coverage.
How much concrete do I need per privacy fence post?
The concrete volume per post depends on post dimensions. A typical hole is three times the post width. For a 10 cm × 10 cm post buried 0.9 m deep with a 30 cm × 30 cm hole, you need about 0.08 m³ of concrete per post. This calculator computes total concrete volume based on your post dimensions and shape.
What size pickets are best for a privacy fence?
Standard picket widths for privacy fences range from 8.9 cm (3.5 in) to 14 cm (5.5 in). For full privacy, set the gap between pickets to 0 cm. Wider pickets (14 cm) with no gap provide maximum privacy with fewer pickets. Common privacy fence picket thickness is 1.9 cm (3/4 in).
How many rails do I need per privacy fence section?
Most privacy fences use 2 or 3 rails per section. Two rails are standard for fences up to 1.5 m tall, while three rails are recommended for taller privacy fences above 1.8 m. The rails run horizontally between posts and support the vertical pickets.
What is the difference between a privacy fence and a regular fence?
A privacy fence uses closely spaced or overlapping pickets with minimal or no gaps to block visibility, while a regular picket fence has visible gaps of 5-7 cm. Privacy fences are typically taller (1.8-2.4 m) and may use wider pickets or board-on-board construction to eliminate sight lines through the fence.