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Stair Calculator
Calculate stair rise, run, step count, and building code compliance
Stair Code Standard (IRC): Maximum riser height is $7.75\text{ inches}$, and minimum tread depth is $10\text{ inches}$. The sum of $2 \times \text{Rise} + \text{Run}$ should ideally be between $24$ and $25\text{ inches}$.
Total Rise & Target Constraints
Calculation Results
⚠️ All risers and treads must be uniform in height and depth throughout the entire staircase to prevent tripping hazards per building codes.