Engineering

Fence Calculator

Posts, Panels, Concrete & Material Estimator

Calculate the exact number of fence posts, panels or boards, concrete bags, and total materials for any fencing project. Supports wood privacy, picket, split-rail, chain-link, and vinyl styles with custom gate placement and per-unit cost estimation.

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Fence Style

Total Fence Length (ft)

Post Spacing (ft)

Waste Factor

Board Width (inches)

Number of Rails

Include Gates

Gate Width (ft)

Quantity

How to Calculate Fence Materials

Fence material quantities depend on three key factors: the total linear footage, the fence style, and the post spacing. For a standard privacy fence with posts 8 feet apart, you divide total footage by post spacing to get post count, then calculate the number of panels or pickets per section.

Post Spacing Guidelines by Fence Type

Fence Type	Standard Spacing	Post Depth
Privacy / Wood	6–8 feet	2 feet (1/3 above ground)
Chain Link	8–10 feet	2.5 feet
Split Rail	8 feet	2 feet
Vinyl	6–8 feet	2 feet
Picket	6–8 feet	18–24 inches

Concrete for Post Holes

Each post hole typically requires 1 bag of fast-setting concrete (50 lb). Post holes should be at least twice the diameter of the post and 1/3 the total post length in depth. For example, an 8-foot post needs at least a 2.5-foot deep hole.

Waste Factor

Always order 10–15% more material than your calculation shows. Cuts at corners, gates, and terrain changes result in waste. Matching wood grain or vinyl color also requires extra stock.

Pro Tip: Call 811 before any digging. In the US, this free service marks underground utilities to prevent dangerous hits.

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