How Many Fence Posts for a 400 ft Perimeter Fence?
A 400-foot perimeter fence with 8-foot post spacing and 2 rails needs 51 posts, 50 sections, and 100 rails.
How to use this tool
- Enter the total fence length in linear feet.
- Set your post spacing (typically 8 ft) and rails per section (typically 3).
- The calculator returns the number of posts, rails, and panels/sections.
Estimate all the posts, panels, and rails needed to enclose a large 400-foot perimeter with a 2-rail wood fence.
Frequently asked questions
- How far apart should fence posts be?
- Most fence posts are spaced 6 to 8 feet apart. Pre-made fence panels often dictate 6 or 8 ft spacing. Corner and gate posts are always additional.
- How many rails does a 6-foot fence need?
- A standard 6-foot privacy fence typically uses 3 horizontal rails (top, middle, and bottom) between posts.