Professional Stair Calculator
Calculate optimal stair dimensions with building code compliance checks
Stair Measurements
Building Code Reference
International Building Code (IBC)
- Maximum rise: 7 inches
- Minimum run: 11 inches
- Maximum variation: 3/8 inch
- Minimum width: 44 inches
International Residential Code (IRC)
- Maximum rise: 7.75 inches
- Minimum run: 10 inches
- Maximum variation: 3/8 inch
- Minimum width: 36 inches
Note: This calculator provides guidance based on common building codes.
Always consult with local building authorities and professionals for specific requirements in your area.