Stairs Calculator
Calculate stair dimensions and verify building code compliance
Stair Parameters
Vertical height from floor to floor
Typical: 7" to 7.75" (code max: 7.75")
Typical: 10" to 11" (code min: 10")
Residential minimum: 36"
Stair Dimensions
Number of Risers
14
Number of Treads
13
Actual Riser Height
7.714 inches
✓ Within code
Total Run
130.0 inches
10.8 feet
Stringer Length
169.0 inches
15.0 feet
Stair Angle
39.7°
Code Compliance
✓ Riser height: 4" - 7.75"
✓ Tread depth: min 10"
✓ Riser + Tread: 17" - 18"
Materials Needed
Stringers: 3 (2×12)
Treads: 13 (32.5 bd ft)
Risers: 14
Estimated Cost: $495.00
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Editorial Note
MyCalcBuddy Editorial Team
This page is maintained as an educational calculator reference.
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Formula Source: Standard Mathematical References
by Various
🔄Last reviewed: May 2026
✓Formula checks are based on standard references and internal QA review.