Stair Stringer Chart
A stair stringer chart is a quick rise-and-run lookup. The calculator keeps it exact by rounding riser count and recomputing actual riser height, total run and stringer length.
stair stringer chart stair stringer calculator rise and run stair rise run calculator
Riser count
risers = ceil(total rise / target riser)
Stringer length
stringer length = sqrt(total rise^2 + total run^2)
Code caution
The calculator screens layout geometry only. Final stairs still need local code checks for uniformity, nosing, headroom, landings, handrails, guards, attachment and stringer strength.
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