Fencing Calculator
Estimate fence posts, sections, panel coverage, rails, pickets, and concrete bags using practical defaults for common residential fence layouts.
Fence layout
Fence inputs
Fence presets
Fence materials
Post-hole concrete
Results
Fence summary
Fence sections
16
Total posts
18
Line posts
14
Actual spacing
7.25 ft
Materials breakdown
End posts
2
Corner posts
0
Gate posts
2
Rails
48
Panels
0
Pickets
248
Concrete estimate
Concrete per hole:1.36 ft3
Total concrete:24.54 ft3
Bag estimate:41 bags
How it works
Gate openings are subtracted from the total run before section material is estimated.
Total sections are rounded up so each segment has enough fence bays to cover the measured run.
When corners are added, the calculator assumes the total run is spread evenly across the resulting fence segments. For uneven layouts, run each side separately for the best accuracy.
Concrete volume uses a cylindrical hole estimate based on hole depth and diameter for every post hole in the layout.
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Why use a fence calculator?
Fence estimates get messy fast once you mix total run length, gate openings, corners, post spacing, and concrete requirements. A good fence calculator turns those field measurements into a material estimate you can actually use before buying panels, posts, rails, or bags of concrete.
How to use this fence calculator
Start with a fence type preset such as privacy, picket, panel, or post-and-rail. Enter the total fence run, then add the distance between posts or section width, the number of corners, and any gates. If you want a concrete estimate, enter the post-hole depth, hole diameter, and concrete bag size.
What the results mean
Total sections estimate how many fence bays fit inside the run after gate openings are removed. Total posts include line, end, corner, and gate framing posts. Depending on the preset you choose, the calculator can also estimate panel count, rails, pickets, concrete volume, and the number of ready-mix bags needed for the post holes.
Why gates and corners matter
Gates remove fence material from the run, but they usually add structure because the opening still needs supporting posts. Corners can also change the estimate because they split the run into more segments, and each segment may need its own rounded section count. That is why a fence calculator can be more reliable than simple length-only math.
For irregular layouts, the best approach is still to calculate each side separately. This tool can estimate cornered runs from one total length, but it assumes the fence segments are distributed evenly unless you break the layout into individual sides yourself.