Inches
PSI

Formula

MI for Solid Round Beams = (pi * (OD4 - ID4)) / 64
Deflection = (length3 * force) / (3 * E * MI)
Bending Stress = (force * length) / (MI / (0.5 * height))

Where,
MI = Moment of Inertia
E = Modulas of Elasticity in psi