Calculate rise, run, stringers, and code compliance
Stair Dimensions
Vertical height from floor to floor
Horizontal length available
Minimum: 10″ (code requirement)
Minimum: 36″ for residential
Stair Specifications
Number of Steps
0
risers
Rise per Step
0″
Run per Step
0″
Total Run
0″
Stringer Length
0″
Angle
0°
Stringers Needed
3
Tread Material
0 sq ft
Estimated Cost
$0
[Stair diagram will appear here]
💡 Building Code Requirements
- Rise: Maximum 7.75″ per step (residential)
- Run: Minimum 10″ tread depth
- Width: Minimum 36″ clear width
- Headroom: Minimum 6’8″ vertical clearance
- Stringers: 3 minimum (16″ spacing max)
- Handrail: Required for 4+ risers, 34-38″ height
- Guardrail: Required if over 30″ above floor
- Formula: 2 × Rise + Run = 24-25 inches (ideal)