Our healthcare is overburdened with the ever increasing population size and it’s time for us in the Pre-clinical Department and Para - clinical department to work synchronously with the clinical Department to ease the pressure of the Clinicians. It is found out that the clinicians spend an ample amount of time in finding out the body mass index. This body mass index calculation is complex and involves finding out the height of the patient, weight of the patient and then also involves a calculation. This needs time. Some - times the clinicians rely on some non – medicos also to calculate and this leads to a lot of errors and somehow there is a confusion of whether such practices can be allowed. This study puts in an effort to find if the position of the nail of the thumb with respect to the body could help in making the rough calculation of body mass index easy.