The Doctoral Thesis presents the developed method – algorithm for assessing the anthropometric fit and ergonomics of clothing. Based on the performed research and the author's experience in the implementation of practical research on clothing sizing problems, a method for assessing the anthropometric fit and ergonomics of clothing has been developed with the aim to promote the efficiency of appropriate clothing selection processes. The concept of this method is outlined, its implementation and operation are described, specifying the structure and elements of the algorithm – parts of the process. The approbation of the method is described, and the results of validation experiments with evaluation are included.