Fence Material Calculator

How to estimate fence materials

A fence quote or a DIY material list starts with a few basic numbers: how long is the run, how far apart are the posts, and how many gates and corners you need. Once you have those, everything else (posts, panels, rails) falls out from simple counting rules.

Start with linear feet

Walk your property line and measure the total length of the fence in feet. If the fence has several runs (side yard, back yard, another side yard), measure each and add them together. This total is your linear footage, and it is the single most important number for any fence project.

Sections and posts

Divide the linear feet by your post spacing to get the number of sections. Most wood and vinyl panels are pre-built at 6 or 8 feet, which is why 8 foot spacing is so common. Post count is then sections + 1, because a run of sections always needs one more post than sections (like fence posts on a straight line: three sections need four posts).

Extra posts for gates and corners

Each gate needs a post on each side, so budget two extra posts per gate. Each corner where the fence changes direction needs its own dedicated post, since one post cannot properly anchor two different directions of tension. This calculator adds those posts automatically once you enter the counts.

Panels and rails

You need one panel per section for pre-built fencing. If you are building stick-built (individual pickets on rails), you still need two horizontal rails per section as a minimum, and taller fences often add a third rail for stiffness. Picket count depends on picket width and spacing and is beyond a quick estimator.

Panel widths lock in your spacing

If you are using pre-made panels, your post spacing is set by the panel width. You cannot use 8 foot spacing with 6 foot panels. Confirm the panel dimensions with your supplier before you dig any post holes, and adjust the spacing input in this calculator to match.

These are planning estimates. A fence contractor or your local supplier will confirm the final material list after seeing the site.