Free NZ Baluster Spcaing Calculator - Metric
Enter your measurements
millimetres
millimetres
max 90 mm (NZ code)
How it works
1
Railing length
— total run of your railing in mm.
2
Baluster width
— face width of one baluster in mm.
3
Desired gap
— your preferred gap between balusters. Maximum 90 mm under NZ code.
4
Results
— baluster count, actual gap, and centre spacing distributed evenly across the full run.
NZ Building Code: Balustrade openings must not allow a 100 mm sphere to pass through (NZBC F4/AS1). Working standard is 90 mm maximum gap. You can go smaller — this calculator will adjust the count accordingly.
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