This paper presents an IoT Based Smart Car Parking System which displays the parking slot number of vacant slots on the LCD display when the car arrives at the gate. It initially checks the presence of the vehicle in each of the parking slots and then displays the slot number of a vacant slot on an LCD display placed near the gate. This guides the new car to park at the appropriate slot. The status of each parking slot is also uploaded onto thingspeak cloud platform. Raspberry pi is used to control the whole mechanism. This prototype also gives an option of controlling the opening/closing of the gate by a website. The gate can be controlled by a website created using HTML and flask package in Raspbian Operating System. This feature is added for security purposes. The objective of this paper is to develop an intelligent, user-friendly automated car parking system that reduces the manpower and traffic congestion and to offer safe and secure parking slots within a limited area.