Fence Calculator
Work out how many fence panels and posts you need.
Fence panels
11panels
- Posts
- 12 posts
Assumes a straight run with a post at each end.
v1.0 · Reviewed September 2026
How this is worked out
The run length is divided by the panel width and rounded up to give the panels. One post is added to the panel count so there is a post at each end.
Worked example
- Fence length 20 m
- Panel width 1.83 m
20 ÷ 1.83 = 10.9, rounded up to 11 panels, plus 1 post
11 panels and 12 posts
Assumptions and limits
- Assumes one straight run. Corners and returns need an extra post each.
- Panel widths are nominal and posts take up space between them, so measure the actual run before ordering.
- Gravel boards, caps, postcrete and gates are not included.