Estimate the number of fence posts and panels needed, plus total cost, based on your fence length.
The Fence Calculator estimates how many posts and panels you’ll need to enclose a given length of fence line, and the total material cost.
Post spacing typically ranges from 6 to 8 feet depending on the fence style and material — check your fencing product’s recommended spacing for best results.
Posts = (Fence Length ÷ Post Spacing) + 1 + Gates. Panels = Fence Length ÷ Post Spacing. Cost = Fence Length × Price per Foot.
A 150 ft fence with posts every 8 ft needs about 20 posts (plus 1 extra per gate) and 19 panels. At $15 per foot, materials would run about $2,250.
It divides the total fence perimeter by the panel or picket spacing width to determine the number of sections, then calculates posts, rails, and pickets needed accordingly.
Typical spacing is 6-8 feet for wood fences, though this varies by fence height, material, and local wind/soil conditions.
Only if you subtract gate width from the total run — gates typically need separate hardware and framing not covered by standard panel counts.