Fence Calculator

Enter fence length and spacing to get material counts.

Inputs
Results
Posts
14
Pickets
200
Rails (2 per section)
26
Formula
Posts = ceil(Length ÷ Spacing) + 1.
Example

100 ft fence, 8 ft spacing ≈ 14 posts.

Purpose of the Fence Calculator

The Fence Calculator produces a jobsite-ready quantity take-off for fence. It's built to match how estimators actually work: enter the finished dimensions, choose a thickness or spec, and read the material and cost totals.

Because building code, base preparation, and inspection expectations vary by jurisdiction, treat the output as a strong starting point — not a substitute for your local engineer or plans reviewer.

  • Material quantities per common purchase unit
  • Waste factor built in so you can compare quotes fairly
  • Optional pricing for quick budget check-ins
  • Compatible with metric and imperial site plans

Common estimating mistakes

The two biggest mistakes are forgetting the waste factor and mismatching units. The Fence Calculator enforces both — you enter waste directly, and units are labeled at every field.

A less obvious mistake is measuring only the visible dimensions. For fence, remember the buried edges: footings, base courses, and overhangs. The Fence Calculator makes it easy to re-run the numbers when a new dimension surfaces.

Cross-check with your supplier

Any professional supplier will happily double-check a quantity — they'd rather quote once than deliver twice. Send them the Fence Calculator result and your dimensions; small adjustments for regional practice are normal.

Frequently asked questions