Fence Calculator
Updated Formulas shown
Enter the total fence length and your post spacing. A 150 ft privacy fence with 8 ft sections needs about 21 posts, 314 pickets and 57 rails.
Posts
21
19 sections
- Posts
- 21
- Pickets
- 314
- Rails
- 57
- Post hole depth
- 2.5 ft
- Concrete (50 lb bags)
- 65
- Concrete (80 lb bags)
- 41
Assumes 10 in holes around 4×4 posts. Corner and end posts are often set deeper or larger.
How to use it
- Measure each run and add them together; count each gate opening.
- Use 8 ft spacing for wood (6 ft for heavy gates or windy areas).
- Privacy fences use 3 rails at 6 ft tall; 2 rails up to 4 ft.
Related calculators
- Fence Post CalculatorCalculate the number of fence posts and post spacing for any length of fence, including gates and concrete.
- Picket Fence CalculatorCalculate pickets for any fence length from picket width and spacing, plus posts and rails.
- Fence Post Concrete CalculatorBags of concrete per fence post: enter hole diameter, depth, post size and number of posts.
Frequently asked questions
How much does a wood fence cost per foot?
Wood privacy fences average $25–$45 per linear ft installed in 2026; materials alone $10–$20.
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Estimates only. Check quantities with your supplier or contractor before ordering.