Construction · stairs
Stair stringer calculator.
Turn the total rise into a practical riser count, tread run, stringer length, and preliminary stringer layout.
Stair inputs
Stair layout
Use the layout as a starting point
The number of risers is rounded up so the actual riser does not exceed the selected maximum. The top landing is not counted as a tread. Confirm landings, headroom, handrails, guards, nosings, stringer stock, and cuts against the locally adopted code and your framing plan.