How many fence posts do I need?

Divide total fence length by post spacing (usually 8 feet), then add 1. For example, a 100-foot fence at 8-foot spacing needs 13 posts plus extra for corners and gates.

How far apart should fence posts be?

Standard fence post spacing is 8 feet for wood privacy fences. Chain link fences use 10-foot spacing. Closer spacing (6 feet) is used for heavy gates or wind-exposed areas.

How deep should fence posts be set?

Set fence posts at least 1/3 of their total length in the ground. A 6-foot fence post should be buried 2 feet deep. In cold climates, go below the frost line.

Should I use concrete for fence posts?

Yes, setting posts in concrete prevents leaning and extends post life. Use a fast-set concrete mix (one 50 lb bag per post) and slope the top away from the post for drainage.

What size post do I need for a 6-foot privacy fence?

Use 4×4 posts for standard 6-foot wood privacy fences. Use 6×6 posts for heavy gates or corners where extra strength is needed.

Fence Post Calculator – DIY Calculators — Free Home Improvement Tools

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Quick Answer

To calculate fence posts needed, divide the total fence length in feet by your post spacing (typically 8 feet), then add 1. Add extra posts for each corner (1 more per corner) and 2 posts per gate opening for proper support.

Calculate how many fence posts you need and how much concrete to set them.

Total Fence Length (feet) Post Spacing Post Hole Depth (inches) Post Hole Diameter (inches)

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Cite This Tool

Fence Post Calculator. (2026). DIY Calculators Online. Retrieved from https://diycalculator.net/fence-post-calculator/

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