Cross-Section Properties
Section Modulus Calculator
Calculate section modulus, moment of inertia, radius of gyration, and area for rectangular, circular, I-beam, box, and tube sections.
Section
Section Properties
Moment of Inertia Ix
6666.67 ×10⁴ mm⁴
66.6667 cm⁴
Section Modulus Wx
666.67 ×10³ mm³
666.67 cm³
Iy
1666.67×10⁴
Wy
333.33×10³
Area
20000 mm²
rx (gyr.)
57.74 mm
Rect: I = BH³/12, W = BH²/6. Circle: I = πD⁴/64, W = πD³/32. Tube: I = π(D⁴-d⁴)/64. I-beam: I = [BH³ - (B-tw)(H-2tf)³]/12. Section modulus W = I/(H/2). Bending stress σ = M/W.
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