Use the calculator to figure out how many balusters or spindles you'll need for a section of deck railing. We broke it down to 4, 6, and 8 feet sections. Example: My railing section in between the deck post is 6 feet. I'm using 2 X 3 spindles so I need 12 spindles.
This calculator also works for balusters.
Measurements are in inches.
What is the code for deck spindle spacing?
Balusters and spindles, the vertical guards that support the handrail, must be 4 inches or less apart. Most city inspectors carry a 4-inch ball with them to test spacing.