OTHER · FENCING
Fencing Calculator
Calculate linear feet of fencing, post count, and panel count for any yard. Supports rectangle mode and custom side lengths. Add cost per linear foot for a total estimate.
About This Calculator
Enter your yard dimensions and post spacing to instantly see total linear feet of fencing, the number of posts to set, and panels to install — rounded to the nearest whole unit so your order is always sufficient.
How It Works
Rectangle mode: perimeter = 2 × (length + width). Custom mode: perimeter = sum of all side lengths. Post count = ⌈perimeter ÷ spacing⌉ + 1 (one end post plus one per span). Panel count = post count − 1 (one panel between each adjacent pair of posts). Enter cost per linear foot for a total estimate.
The Formula
posts = ⌈perimeter ÷ spacing⌉ + 1 panels = posts − 1
- perimeter
- total linear feet of fence line
- spacing
- distance between posts in feet
Frequently Asked Questions
- What post spacing should I use?
- Wood privacy fences typically use 6–8 ft spacing for adequate panel support. Chain-link fences can span 8–10 ft between line posts. Decorative aluminum and wrought-iron fences often use 6 ft spacing for rigidity. Check your panel or rail manufacturer's spec for the recommended maximum span.
- Why is post count one more than the panel count?
- Each fence section (panel) sits between two posts. For a straight run of N panels you need N+1 posts — one at the start, one between each pair of panels, and one at the end. This calculator uses the same logic for enclosed yards (adding a closing post).
- How do I measure an irregular lot?
- Switch to Custom mode and enter each side length separately. For lots with more than 4 sides, split them into segments and add the totals manually, then enter the combined perimeter as a single side in Side 1.
- Are cost estimates accurate?
- The cost estimate is perimeter × your entered cost per linear foot. Actual fencing costs vary significantly by material (chain link is typically $10–$20/lf installed, wood $15–$30/lf, vinyl $25–$45/lf, wrought iron $30–$50/lf). Always get contractor quotes before purchasing.
Estimates only. Coverage figures (sq ft/gallon, bag yield, BTU/sq ft) are industry rules of thumb with real-world variance. Verify quantities with your supplier before purchasing.