Stair Stringer Calculator
Calculate stair stringer dimensions, layout settings, and material requirements for stair construction.
Stringer Parameters
Stringer Length
14.08 ft
169.01" (4 stringers needed)
Number of Risers
14
Number of Treads
13
Framing Square Settings
Rise Setting7.71"
Run Setting10.00"
Bottom Drop1.00"
Stock Requirements
Recommended Stock2x14 or LVL
Min. Length Needed181.0"
Throat Depth4.94" (OK)
Materials
Stringers Needed4
2x12 Boards (12ft)6
Total Board Feet60.3 bf
Estimated Cost
$210.00
Stringer lumber only
Stringer Layout Tips
Minimum Throat
Maintain at least 3.5" of material at the narrowest point for structural integrity.
Bottom Drop
Subtract tread thickness from bottom riser so first and last step heights match.