Fence Calculator

Know What Your Fence Actually Needs Before You Buy

Fencing materials add up fast once you factor in posts, panels or pickets, rails, concrete, and gates — and it's easy to underbuy on one item while overbuying on another. This calculator takes your total fence run and style (wood picket, panel fencing, chain link, or split rail) and works out exactly how many posts, panels/pickets/rails or fabric rolls, and bags of concrete you need, plus an editable cost estimate you can tune to your local supplier's prices.

How to use it

• Enter the total length of fence you're installing, in feet.
• Pick your fence style — wood picket (built rail-by-rail on site), panel fencing (pre-built wood, vinyl, or aluminum sections), chain link, or split rail.
• Set your post spacing (it auto-fills a sensible default per style, but adjust it if your plan calls for something different) and how many gates you need.
• Open the pricing section to plug in your actual per-unit prices — the defaults are ballpark U.S. averages, so swapping in real supplier quotes gets you a much more accurate total.

Real-world use cases

Getting a materials list together before a trip to the lumber yard or hardware store, sanity-checking a contractor's quote against your own estimate, comparing the total cost of wood picket versus vinyl panel fencing for the same yard, or figuring out how many 50ft rolls of chain link fabric to order for a large property line.

Frequently asked questions

Why does adding a gate change the post count?

Gate posts typically need to be sturdier than regular line posts since they carry the weight and swing stress of the gate, so this calculator adds one extra dedicated post per gate opening on top of the standard line-post count.

How many bags of concrete does one post really need?

It depends on the post size and hole depth, but two 50lb bags per post is a common baseline for a standard 4×4 or 5×5 wood or vinyl post set roughly 2 feet deep — heavier posts (like large chain-link terminal posts) or deeper holes in harsh climates may need three or more, which is why the bags-per-post field is editable.

What's the difference between "panel fencing" and "wood picket" here?

Panel fencing means pre-built sections (common in vinyl, aluminum, and pre-fab wood privacy fencing) that you buy as a whole unit and attach between posts. Wood picket fencing is built board by board on site — you buy individual pickets and rails separately, which this calculator accounts for with its own picket-spacing math.

Why is chain link measured in rolls instead of panels?

Chain link fabric is sold as a continuous mesh on rolls (50 feet is the most common size), not as fixed-width panels, so the calculator rounds your fence length up to the nearest full roll and separately estimates the top rail footage needed to brace the fabric along the top.

Does this include labor cost?

No — this is a materials-only estimate. Labor varies enormously by region, fence complexity, and whether you're hiring a contractor or doing it yourself, so it's left out entirely; add your own labor estimate on top of the material total shown here.