Axiomatic design is based on two axioms. The first one is used to create a new design while the second is used to select the best design among the designs that satisfy functional requirements. The selection process is for the designs that are created with same functional requirements. However, in the industry, there are several designs which are created by using different functional requirements. In this paper, an algorithm has been presented to select the best design alternative among the designs created by different functional requirements. The selection is done by using entropy of design matrix. To illustrate the proposed algorithm numerical examples have been presented.