Stair Step Count Calculator
Determine how many steps you need for a staircase by dividing the total vertical rise by your target riser height. Use the result to plan stringer cuts, check code compliance, and estimate materials.
Consult building standards and professionals for safe staircase design.
Examples
- 108 in total rise ÷ 7 in risers ⇒ 15.43 ⇒ 16 steps required
- 96 in total rise ÷ 7.5 in risers ⇒ 12.8 ⇒ 13 steps
- 125 in total rise ÷ 7.25 in risers ⇒ 17.24 ⇒ build 18 steps
FAQ
Why is the result rounded up?
A partial step would not meet the total rise, so the number is rounded up.
Does this include landings?
No, it only counts steps.
What is a typical rise per step?
Many codes specify a maximum riser of 7.75 in and a minimum of 4 in; check local rules for exact values.
Should local codes be checked?
Yes, always verify requirements before construction.
How do I handle uneven foundations?
Measure the highest and lowest points of the finished floors, use the greater rise in the calculator, then adjust bottom shims or top landing thickness to even out small differences.
Additional Information
- After rounding up the step count, divide the total rise by that number to find the exact riser height for layout.
- Building codes often limit the difference between the tallest and shortest riser to 3/8 inch for safety.
- Add landings or winders separately—this tool counts only the individual step rises.
- Pair this with tread depth calculations to verify the overall run and staircase footprint.