Fence Calculator

The default 2.5 m suits most timber and mesh fences. Heavier panels or windy, exposed sites call for closer spacing (1.8–2.0 m); check your panel width, since panel fences must span exactly post-to-post.

Each section needs a post at both ends, and neighbouring sections share the post between them. So a straight run of N sections has N+1 posts — the two ends plus the internal dividers.

Two is standard for fences up to about 1.2 m; taller fences usually get three for rigidity. Enter whatever your design uses and the tool multiplies it across all sections.

Enter the picket width and the gap between pickets. The tool adds them for the spacing each board occupies and divides the fence length by that. A larger gap means fewer, more widely spaced boards.

No — it assumes one straight run. For an L-shape or a perimeter, calculate each straight side separately and add them, remembering each corner adds a shared post. Subtract gate openings from the length.

That’s a separate calculation — post-hole volume depends on hole diameter and depth. Multiply one hole’s volume by the post count and use the concrete calculator for the mix.

Buy a few spare pickets and a rail or two — timber warps and splits, and a couple of rejects per bundle is normal. The tool gives the exact count; add your own margin on top.

Yes for posts and sections — each panel is one section, so set the spacing to the panel width. Skip the picket fields, since panels aren’t counted board by board.

No. The calculation runs entirely in your browser; nothing is sent anywhere and analytics never receives your figures.