The multidimensional scaling model of successive intervals was applied to investigate the dimensionality of auditory perception of pure tones. The stimuli consisted of 16 pure tones. Thirty‐nine observers made distance judgments of similarity between stimuli. These interstimuli distances were analyzed mathematically to reveal the minimum number of dimensions necessary to account for the distances between stimuli. The results of the analysis indicated that two factors, pitch and loudness, were fairly well defined. A third factor, not as well defined, appeared to relate to pitch. The purpose of the study was to evaluate the multidimensional scaling method for use in auditory areas where the dimensions are not well known, and, since the anticipated dimensions, pitch, and loudness, were revealed, proposed use of the model in other auditory areas is supported. [This research was supported in whole by the U. S. Air Force under Contract No. AF 33(616)‐3644, monitored by the Aero Medical Laboratory, Wright Air Development Center.]