Measure. Count. Send your list.
Baluster spacing calculator
Check the equal gaps for the baluster count already in your plan. Count requested balusters across identical level sections and add them to your list.
Call or text (718) 851-2100 for today's price. Text the yard · Request a quote
Your measurements
Measure the clear distance between the inside faces of the posts, in inches. Enter the baluster width across the opening and the count from your approved plan. Use identical level sections only.
Example only. Replace these numbers with your job measurements and plan.
Your material count
Ready when you are.
Enter your measurements and waste allowance, then tap Calculate.
Your result will show what was counted and what needs confirmation.
A count to discuss with the yard. Availability and specification are confirmed when we quote.
Keep the job together
My list
Your list is empty. Calculate, then add your result.
Items stay in this browser. Review your measurements and add material details before sending. The quote page is the next step; nothing has been sent yet.
How this baluster spacing calculator works
Space left = clear opening − (baluster count × baluster width). Equal gap = space left ÷ (baluster count + 1), including one gap at each post. Order count = balusters per section × identical sections × (100 + waste percentage) ÷ 100, rounded up. Waste changes the order count, not the spacing.
Check a worked example
Arithmetic only: fifteen balusters at 1.5 in occupy 22.5 in of a 72 in opening. The remaining 49.5 in divided among 16 gaps is 3.09375 in per gap. Two sections need 30 balusters; 10% extra requests 33. A requested length of 32 in is an example, not a required height.
Before you order
This checks arithmetic only and does not choose a count or allowable gap. It is not a guard design, a code check or a cutting layout. It does not cover stair angles, rails, posts, connectors or kit compatibility. For count, spacing, height, attachment and suitability, confirm with your engineer or architect. The yard checks whether individual pieces or a compatible kit can be ordered.
Call or text (718) 851-2100 for today's price.
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For deck boards, joists and a full deck layout, use the existing deck calculator and planner.