FREE ONLINE CALCULATOR

Fence Calculator

Estimate fence spans, posts and total fence area for a straight fence line.

✓ Instant results ✓ Editable inputs ✓ Formula explained

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CONSTRUCTION · TOOLS

MEASURE Enter project dimensions

ESTIMATE Calculate material volume

PLAN Check practical assumptions

CALCULATION TOOL

Fence Calculator

Change any value and calculate again.

Uses the values you enter. No account required.

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ABOUT THIS TOOL

When to use a fence calculator

Estimate fence spans, posts and total fence area for a straight fence line.

All assumptions are visible and adjustable. Check rates and underlying data against original sources before making a decision.

HOW IT WORKS

The calculation

Span count = ceil(fence length/post spacing); posts = span count + 1 (straight fence line with two ends).

Read the full guide →

ASSUMPTIONS

Know the limitations

Simple straight fence with no gates, corners or elevation changes. Add extra posts for corners and gates.

Results are estimates derived from your inputs.