Fence Calculator
Posts, rails and panels needed for a run of fencing.
m
m
Posts needed
13
Sections
12
Rails
24
Panels
12
ShowHide the working
- 1Sections = ⌈30 ÷ 2.5⌉ = 12
- 2Posts = sections + 1 = 13
- 3Rails = 12 × 2 = 24
Formula
posts = ⌈length ÷ spacing⌉ + 1How it works
Counts posts, rails and panels for a straight fence run. There is always one more post than sections.
Example
A 30 m fence with 2.5 m spacing needs 13 posts and 12 sections.
About the Fence Calculator
Posts, rails and panels needed for a run of fencing. It sits in the Home & Construction section of NWS Calc, a free collection of calculators that run entirely in your browser. There is no signup, no paywall and no tracking — open the page, enter your numbers, get an answer.
Frequently asked questions
- Is the Fence Calculator free to use?
- Yes. Every calculator on NWS Calc is completely free, with no signup, no usage limits and no ads.
- Does my data leave my device?
- No. The Fence Calculator runs entirely in your browser using JavaScript. Nothing you type is uploaded, logged or stored on a server.
- Can I use the Fence Calculator on my phone?
- Yes. The page is fully responsive and works in any modern mobile or desktop browser — there is nothing to install.
- What else is in Home & Construction?
- Paint, tile, concrete, flooring, lumber and material estimates. You can browse the full Home & Construction category for related calculators.