Qualitative and quantitative studies of various bones has had been the pivot of sex–determining tools in the human skeleton. The present study tries to shed light on the potential efficiency of improving sex estimation using the humerus. The study was carried out in Department of Anatomy, Medical College, Kolkata upon 100 dry Humeri of unknown age and stature, according to the side and sex obtained from the population of West Bengal. 50 humeri from right side(25 male+25 female) and 50 from left side (25 male+25 female) were taken into account. Humeral length was estimated by following the morphological length using standard technique with the help of osteometric board. The morphological length was read off on the scale. Analysing the results it is seen that significant sexual dimorphism exists in morphological length in both left and right sided Humeri.