Fence Calculator

Posts, rails and pickets for a straight fence run from length, spacing and height.

ft
ft

6–8 ft is typical for wood.

in
in
in
Enter your details and press Calculate to see results.

Formula

posts = ceil(length ÷ spacing) + 1 · pickets = ceil(run ÷ (width + gap))

Example

100 ft at 8 ft spacing → 14 posts (incl. one end). At 72 in tall with 5.5" pickets + 0.5" gaps → ~217 pickets.

Planning notes

Corners and gates each need extra posts; add them manually. Check property lines and local height rules before digging — most codes require locating utilities first.

Frequently asked questions

How deep should fence posts be set?

One-third of above-ground height, minimum 24 inches, below frost line where applicable.

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