How this calculator works
Uses equal clear gaps at both ends and between balusters. Enter your project's permitted gap; this is quantity math, not a code-compliance check.
For best results, measure actual field dimensions, use supplier-specific coverage, and choose a waste allowance that matches the work conditions.
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FAQ
What is the baluster spacing calculator used for?
Estimate baluster count and equal clear gaps for a railing opening.
Should I add waste or overage?
Yes. Most jobsite estimates should include a reasonable waste factor for cuts, spills, compaction, breakage, or field variation.
Is this a final bid number?
No. Use it as a planning estimate and verify local material coverage, code requirements, and supplier specifications before ordering.