Section Modulus Calculator
Calculate elastic (S) and plastic (Z) section modulus for common structural shapes. Determine allowable bending moment capacity.
Section Properties
in
in
psi
Elastic Section Modulus (Sx)
144.0000 in³
Sx (Elastic)
144.0000 in³
Sy (Elastic)
72.0000 in³
Zx (Plastic)
216.0000 in³
Zy (Plastic)
108.0000 in³
Shape Factor
1.500
Area
72.0000 in²
Allowable Moment (Elastic)
288000.00 ft-lb
Allowable Moment (Plastic)
432000.00 ft-lb
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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.