📏

Fence Post Depth Calculator

Fence Height (ft)

Wind Exposure (1=low,2=moderate,3=high)

Soil (1=clay,2=loam,3=sandy)

Fence Material

Waste Factor

Result

—inches deep

◆ LIVE 3D PREVIEW

Post Length

—

Hole Diameter

—

How to Calculate Fence Post Depth

Use this free fence post depth calculator to get instant, accurate results for your construction project. Simply enter your measurements above and the calculator will automatically compute the result using industry-standard formulas.

Pro Tip: Always add 10-15% extra material to account for waste, cuts, and job-site conditions. This is standard practice recommended by experienced contractors.

Related Calculators

▸ Cedar Fence ▸ Chain Link Fence ▸ Compost ▸ Concrete Footing Depth ▸ Concrete For Post ▸ Concrete Mailbox Post

💡 Pro Tips — Fence Post Depth

Post depth: 1/3 of total post length underground. 6ft fence = 8ft post with 2ft buried.
Concrete every post: Use 2 bags of 50lb concrete per post. Never skip this.
Set posts first, then attach rails and pickets. Don't build panels then try to plumb posts.
Gate posts need extra support — use 6×6 posts or double 4×4s for gate openings.
Check property lines FIRST. Fences built over the line are your neighbor's fence legally.

❓ Frequently Asked Questions

+How deep should posts be?

1/3 of total post length. 6ft fence = 8ft post with 2ft buried. Cold climates must go below the frost line.

+How much concrete per post?

2 bags of 50-lb quick-set concrete per post. Pour dry mix into hole, add water. Sets in 20-40 minutes.

+How far apart are posts?

8 feet is standard for wood fences. Use 6ft spacing for windy areas or fences over 6ft tall.

+Do I need a permit?

Usually yes for fences over 6ft. Always check property lines with a survey — building on a neighbor's land creates legal issues.

Fence Post Depth Calculator

How to Calculate Fence Post Depth

Related Calculators

📋 Shopping List

💡 Pro Tips — Fence Post Depth

❓ Frequently Asked Questions