Understanding the Fence Calculator
A fence calculator estimates the posts, rails, and panels or pickets needed to enclose an area, based on the fence length and style. It helps you plan a fencing project and order the right quantities the first time.
Posts set the framework
Posts are spaced at regular intervals — commonly 6 to 8 feet apart — so the fence length and chosen spacing determine how many you need, plus one extra to finish the run. Corners and gates require additional or heavier posts. Rails and pickets or panels then fill the spans between posts.
Gates and terrain
Remember to plan for gate openings, which interrupt the picket count and need sturdier hardware. Sloped or uneven ground may require stepped or racked panels and can change material needs. Measuring the actual perimeter carefully, including any irregular boundaries, keeps your estimate accurate.
Tips & things to know
- •Space posts evenly, typically 6–8 feet apart.
- •Plan extra heavy-duty posts for corners and gates.
- •Sloped ground may need stepped or racked panels.