Section Modulus Calculator
Free calculate z = i/c for beam cross-sections. determine section modulus for rectangular, circular, and i-beam sections.
Input Parameters
Results
Enter parameters to calculate section modulus
Section Modulus Formula
Formula
Z = I / c
Where:
- • Z = section modulus (m³)
- • I = moment of inertia (m⁴)
- • c = distance to extreme fiber (m)
Common Sections
- • Rectangle: Z = bh²/6
- • Circle: Z = πd³/32
- • I-Beam: Z = I/c (from tables)