Introduction: One of the most important functions of the lungs is ventilation. The ventilation is effected by different factors such as strength of the respiratory muscle, chest circumference, presence or absence of body fat, height and also the sex of the individuals. The spirometry is one of the most common procedures to measure the ventilatory capacity of the lungs.

Aims and Objective:  the aim of the present study is to find a correlation between the body surface area and lung volume and capacities.

Materials and Methods: the present study was conducted on 200 healthy young adults of 18- 21 years of age in around the Assam Medical College, Dibrugarh. Group I comprised of 120 healthy young males and Group II comprised of 80 healthy young females. TV, IRV, ERV, MVV were measured with Inco’s double recording spirometer in conjunction with electric kymograph and PEFR was measure with mini wright peak flow meter.

Results:  in the present study the study population is devided into two groups on the basis of body surface area (BSA) group 1 BSA of 1.3-1.49 Sq/m and Group 2  1.5-1.69 Sq/m. It has been found that the study population having higher body surface are have higher lung function than the group having lower body surface area, which is also statistically significant.