Stair Calculator
Divide total rise by target riser height, round to a whole riser count, then recompute equal riser height.
This calculator is free to use. Enable JavaScript to enter your values and see a result instantly.
How it works
Divide total rise by target riser height, round to a whole riser count, then recompute equal riser height.
Worked example
280 cm of rise at 17.5 cm per riser uses 16 risers.
Keep in mind
Check local building codes and tread geometry before construction.