Baluster Spacing Calculator
Calculate baluster count and spacing for code-compliant railings
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How to Use This Calculator
Rail length.
Baluster width.
Get Spacing.
Understanding Baluster Spacing Calculations
4-inch rule.
Even spacing.
Safety.
Aesthetics.
Formula & Calculations
(L - W) / (Gap + W)
Key Factors to Consider
Max gap < 4"
Uniformity
End posts
Fastening
Frequently Asked Questions
1Max gap?
4 inches (sphere rule).