Beam Calculator

This calculator works out the statics of a single beam: the support reactions, the maximum shear, the maximum bending moment and where it falls, and the deflection curve with its largest sag. You enter the span, a uniform load, a point load and its position, and the two stiffness figures for the section you are already using, the elastic modulus E and the second moment of area I, in metric or imperial units. It draws the loaded beam, the bending moment diagram and the deflected shape alongside the numbers. This is not a design check and it does not size anything: it will not pick a section, will not look up an allowable span and will not tell you whether a beam passes, because that comes from the building code your jurisdiction has adopted and from an engineer who signs for it.