The conventional and computerized methods for designing concrete mix are presented in this work. In the case of the traditional system, inattention to the aggregate's passing percentage and grading is noted. The calculation begins using the usual method based on the desired slump and necessary water content. The fine aggregate and coarse aggregate content, which is calculated regardless of aggregate grading, is a crucial factor in mix proportioning. As a contemporary technique, the "Specific Method of Computerized Grading Kurve", a system based on aggregate grading, has been devised. Through the use of a Graphical User Interface built on MATLAB, the "SMCGK" technique has been automated. For various grades of concrete, the mix proportions were determined using both the conventional approach and the SMCGK technique