Steel Column Axial Stress & Slenderness Calculator

Calculate average axial compressive stress, effective length, slenderness ratio and ideal Euler elastic buckling stress for a preliminary steel column check.

Axial compressive load

Gross cross-sectional area

mm²

Unsupported length

Least radius of gyration r

Effective length factor K

—

Elastic modulus E

N/mm²

Average axial stress

100.00 MPa

Effective length KL

3000 mm

Slenderness KL/r

50.0 —

Ideal Euler stress

789.6 MPa

Euler stress is an ideal elastic reference, not a code design strength. Real column capacity depends on yield strength, imperfections, residual stress, buckling curve, local buckling, end restraint, second-order effects, eccentricity and code resistance factors.