Stair Stringer Calculator
Calculate stair stringer dimensions, riser height, tread depth, and material requirements for your stair construction project.
Step 1: Stair Dimensions
Understanding Stair Dimensions
The total rise is the vertical height from floor to floor. The total run is the horizontal depth of the staircase. Proper dimensions ensure safety and comfort.
Step 2: Step Details
About Stair Safety
For safe stairs, follow the “7-11” rule: risers around 7 inches and treads around 11 inches. The sum of riser height and tread depth should be between 17-18 inches for comfortable climbing.
Stair Stringer Calculation Results
Total Stringer Length Required
Stair Type Comparison
| Stair Type | Stringer Length | Steps Required | Space Needed | Difficulty Level |
|---|
Stringer Cut Pattern
Stair Calculation Formula
Stringer Length = √(Rise² + Run²)
The stair stringer length is calculated using the Pythagorean theorem. Number of steps = Total Rise / Riser Height. Tread Depth = Total Run / (Number of Steps – 1).
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