Worldwide growth of cities is unstoppable and a great challenge for urban development and architecture. The existing transportation facilities and buildings do not always provide a suitable level of safety, and level of service. The present study focuses on analyzing the effect of pedestrian count (population), inclusion of buffer space and door widths on the capacity of a doors. The relationship between total times versus door width and capacity versus door width were established. Capacities were estimated for a room with single door and double doors with different pedestrian count. Comparison of capacities for a room with single door and double doors (Door-1 and Door-2 are 1 m apart) has been done for 100 cm width with different pedestrian count. It was observed that capacity increases as the width of the door increases in a room with single door. In the case of room with double doors, the congested flow observed in Door-1 and uncongested flow observed in door-2 due to herding behavior.