How to use the stair calculator
- Total rise (in): Vertical floor-to-floor height.
- Target riser height (in): Preferred approximate riser height.
- Tread depth (in): Horizontal depth of each tread.
- Select the button and review the result.
Worked example
108 inches with a 7.25-inch target produces about 15 risers.
Method and limitations
Risers = rounded total rise ÷ target riser.
Concept only. Stair geometry, landings, guards, headroom, and structure must meet local code.
Common questions
Why might another result be different?
Inputs, rounding, policies, rates, and assumptions can differ. Compare like-for-like values and use current official information when a rate or rule can change.
Does NidXee save my entries?
No. The calculation runs in your browser. Reloading or closing the page may clear it.