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Gardenly3D

Fence Calculator

Enter your fence length, height, and style preferences to estimate the number of posts, rails, pickets, and concrete bags needed for your project. Results are approximate and intended for planning purposes only — always consult a professional and confirm final quantities and specifications before ordering materials.

ft

Fence Elevation

100 ft

Results

Fence Posts
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Post Length (1/3 buried)
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Rails
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Pickets
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Concrete Bags (60 lb) — 2 per post
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How to Calculate Fence Materials

  1. 1

    Measure your fence line

    Walk the planned fence line and measure the total length in feet. Mark the start, end, and any corner or gate locations. Use stakes and string to keep the line clear and consistent.

  2. 2

    Choose your fence style

    Select your fence height, post spacing, and picket size. Taller fences and closer post spacing provide more privacy and wind resistance but require more materials.

  3. 3

    Review the materials list

    The calculator provides counts for posts, rails, pickets, and concrete bags. Post length includes 2 feet of burial depth for stability.

  4. 4

    Plan your installation

    Call 811 before digging to locate underground utilities. Set corner and end posts first, then fill in line posts. Allow concrete to cure 24-48 hours before attaching rails.

Pro Tips

  • Space fence posts 6-8 feet apart — 6 feet provides more strength in high-wind areas, while 8 feet saves on materials for sheltered locations.
  • Bury posts at least one-third of their total length. For a 6-foot fence, use 8-foot posts with 2 feet underground.
  • Use 2 bags of 60-lb concrete per post for a solid footing. In loose or sandy soil, consider 3 bags per post.
  • Plan gate openings before setting posts — standard single gates are 36-42 inches wide, double gates are 6-8 feet.
  • Always check your property lines and local building codes before building. Many areas require fences to be set 2-6 inches inside your property line.
  • Pre-stain or seal all wood components before installation to protect end grain and hard-to-reach surfaces.

Frequently Asked Questions

How far apart should fence posts be?
Standard post spacing is 6 to 8 feet on center. Use 6-foot spacing for tall privacy fences or windy areas, and 8-foot spacing for shorter fences or sheltered yards. Never exceed 8 feet between posts.
How deep should fence posts be?
Bury fence posts at least 2 feet deep, or one-third of the total post length. For a 6-foot fence, use 8-foot posts with 24 inches in the ground. In cold climates, dig below the frost line.
How many pickets do I need for a fence?
Divide total fence length in inches by the picket width plus gap. For example, 100 feet of fence with 3.5-inch pickets and 1.5-inch gaps: (1,200 inches) / (3.5 + 1.5) = 240 pickets.
How much concrete per fence post?
Use 2 bags of 60-lb quick-set concrete per post for standard 4×4 posts in a 10-inch diameter hole. For 6×6 posts or sandy soil, use 3 bags per post.
Do I need a permit to build a fence?
Permit and setback requirements vary by municipality, fence height, and neighborhood rules. Always check local building codes and HOA requirements before starting.

Results are approximate and intended for planning purposes only. Material densities, coverage rates, and quantities are estimates that may vary based on actual conditions, product specifications, and installation methods. Always consult a professional for final specifications.

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