Quickly calculate how many fence posts you need for your project. Enter the total fence length, post spacing, and number of corners or gates to get an accurate post count with concrete estimates for setting each post.
Enter Your Measurements
Results
Total Posts
22
posts
Line Posts
20
posts
Gate Posts
2
posts
Concrete (80 lb bags)
44
bags
Gravel Bags
22
bags
Formula
How to Use This Calculator
How to Use
- 1
Enter the total fence length in feet.
- 2
Enter the desired post spacing (8 feet is standard).
- 3
Enter the number of gates (each gate requires 2 additional posts).
- 4
Enter the number of corners.
Frequently Asked Questions
Frequently Asked Questions
How many bags of concrete per fence post?
Can I use gravel instead of concrete for fence posts?
In-Depth Guides
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About This Calculator
This calculator uses the formula: Line Posts = (Fence Length ÷ Post Spacing) + 1 | Total Posts = Line Posts + (Gates × 2). All calculations follow industry-standard methods. Results are estimates — always verify with a licensed professional for structural or code-compliant work.
Built and maintained by the CalcSmart team. Last updated March 2026.
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