Calculate fence posts and rails for a board fence run.
Fence Posts
— posts
Plus rails.Usage Tip
Set the end and corner posts first and run a string line between them, then space the line posts evenly so the panels come out equal.
THE MATH
posts = round up( length ÷ spacing ) + 1
rails = (posts − 1) × rails per section
rails = (posts − 1) × rails per section
A fence run is divided into sections between evenly spaced posts. Post count is the length over the spacing plus one for the end; rails are the sections times the rails per section.
Enter the fence length, the post spacing, and the rails per section (2 for short fences, 3 for tall ones).
Post count rounds up.
Post count rounds up.