Stair Rise and Run Calculator
Enter your staircase's total rise and the number of steps to calculate the rise per step and check it against typical comfort ranges.
Stair Rise and Run Calculator
Calculates the rise per step from total staircase height and number of steps, and flags whether it falls in a typical comfortable range.
This calculator divides your staircase's total floor-to-floor rise by the number of steps to find the rise (riser height) per individual step, then flags whether that figure falls in the typical comfortable range used by residential building codes. It's a useful first check when planning a staircase, but final riser height must always be verified against your specific local building code, which sets exact minimum and maximum limits.
Example
- With the default values shown above, this calculator returns: Rise per Step ≈ 16.7 cm; Comfort Assessment = 16.666666666666664.
Frequently Asked Questions
What's a typical comfortable rise per step?
Most residential building codes and ergonomic guidelines target a rise per step in roughly the 15-20 cm range, though exact limits vary by jurisdiction — always check your local building code.
Why does step rise matter for safety?
Steps that are too steep or too shallow relative to typical stride length can increase trip and fall risk, which is why building codes typically set both minimum and maximum riser height limits.
Sources
- Standard formula, publicly documented method