Calculator
Steel beam calculator
Analyze steel beams with real AISC W-shapes (W4 through W24) and structural steel material properties (E = 200 GPa, fy = 250 MPa). Pick a section from the library or enter a custom I, and the solver returns reactions, SFD, BMD, slope, deflection and bending stress instantly. The calculator below is pre-loaded; change anything and results update instantly.
About this case
Classic textbook case: uniform load over the whole span.
All diagrams use the Euler–Bernoulli beam theory with an exact finite-element solver that runs entirely in your browser. You can move supports by dragging them, switch unit systems at the top of the input panel, and export results as CSV or a printable report.