A fortranprogram has been developed for the IBM 1620 computer in order to calculate Buckingham orB‐numbers, dimensionless products of variables, from the laws of physics. For a given set of physical quantities, the corresponding set ofB‐numbers is invariant under changes of the reference set of dimensions, such as length, mass, time, charge, and temperature. Complete and nonredundant sets ofB‐numbers are obtained for 35 formulas from a representative branch of physics (solid‐state). A systematic procedure is established for coding and cataloguing these formulas in terms ofB‐numbers. It is anticipated that decoding techniques can be applied to this catalogue to yield information on the interrelationships among and redundancy in the laws governing physical phenomena.