Fence Calculator
Estimate fence posts, rails, pickets, and panels.
This page is an editable estimator with realistic defaults so you can model your own situation in minutes.
Posts = fence length / post spacing + 1.
Pickets = fence length / picket spacing.
| Post spacing | 8 ft | |
|---|---|---|
| Waste | 10% |
Assumptions
- Measure actual site dimensions before ordering.
- Waste factors, cuts, overlaps, compaction, and product coverage vary by material and installer.
- Confirm quantities with plans, local code, supplier guidance, and manufacturer instructions.
How this calculator works
Formula used
Posts = fence length / post spacing + 1. Pickets = fence length / picket spacing.
Example calculation
Plug in your own numbers and the result updates instantly. Posts = fence length / post spacing + 1. Pickets = fence length / picket spacing.
Fence Calculator FAQ
Is this fence calculator exact?
No. It is an estimating tool only. Actual quantities can change with field measurements, waste, layout, product dimensions, building codes, soil conditions, and installer methods.
Should I add extra material?
Usually yes. Many projects use a waste factor for cuts, breakage, overlap, spillage, grading, or mistakes. The best waste factor depends on the material and layout.
Should I verify before ordering?
Yes. Confirm quantities with your contractor, supplier, plans, local code requirements, and product installation instructions before purchasing materials.