Deck Railing Calculator
Estimate railing materials for decks
ft
ft
Formula
Posts = (Length / Spacing) + 1
Balusters max 4" apart per code; posts every 6-8 feet.
Examples
40ft railing
~7 posts, ~120 balusters.
Frequently Asked Questions
About Deck Railing
Estimate railing materials including posts, balusters, and rails.