Maximum deflection, bending moment and bending stress for a simply supported or cantilever beam under a point or uniformly distributed load. Elastic, small-deflection theory — metric units (N, mm, GPa).
Deflection and moment use standard elastic beam formulas (e.g. simply-supported central point load δ = PL³/48EI). UDL is entered as load per metre. Valid for small deflections of a uniform prismatic beam in its elastic range — not a substitute for a full structural check.