Stair Stringer Calculator

Enter total rise and get step count, rise/run per step, stringer length, angle, and a printable cut diagram.

✓ Meets IRC building code requirements
Risers
14
Rise per Step
7 3/4"
7.71"
Run per Step
10"
Treads
13
Stringer Length
169.01"
14.1 ft
Angle
39.7°
Total Run
130.00"
10.8 ft
Comfort (2R+T)
25.4"
Ideal: 24-25"
Stringer material: 2×12 × 16' (min)
Rise: 108.00"Run: 130.00"39.7°
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Disclaimer: Calculators provide estimates. Always verify with local building codes (IRC 2021) and consult a professional for structural work.