🔩Structural Engineering Calculators

Buckling, section modulus, moment of inertia. 4 free tools with transparent formulas and quick results.

Moment of Inertia

Calculate second moment of area (Ixx, Iyy) for rectangle, circle, hollow rectangle and hollow circle sections....

Section Modulus

Calculate elastic and plastic section modulus for a rectangular beam section. Returns bending stress and plast...

Column Buckling (Euler)

Calculate critical buckling load (Pcr) for slender columns using Euler's formula. Supports all end conditions....

Steel Beam Sizing

Calculate required section modulus for a simply-supported steel beam under uniform load. Returns Mmax, Vmax an...