Fence Calculator
Posts, rails and pickets needed.
Enter your values
ⓘ Live results
Results
- Posts needed
- 16
- Sections
- 15
- Rails
- 45
- Pickets
- 275
- Concrete bags (1 per post)
- 32
- Estimated cost
- $2,640.00
Quick answer
Fence posts sit at 6–8 ft centres; picket count is fence length divided by picket width plus spacing.
How to use the Fence Calculator
- 1Measure the total fence run in feet.
- 2Choose your post spacing (6 or 8 ft).
- 3Enter picket width and rails per section.
Worked example
Using the values the calculator loads with:
Inputs
- Fence length120 ft
- Post spacing8 ft
- Picket width5.5 inches
- Rails per section3
- Cost per foot22 $
Results
- Posts needed16
- Sections15
- Rails45
- Pickets275
- Concrete bags (1 per post)32
- Estimated cost$2,640.00
Frequently asked questions
How deep should posts go?
One third of post height, minimum 24 inches, below the frost line.
Do gates need extra posts?
Yes, use heavier posts either side of each gate.
About this calculator
- Built and reviewed by James Whitfield · How we build and test calculators
- Report an error
Results are estimates for general information. For medical, legal, structural or financial decisions, confirm with a qualified professional.