The 21st century has seen the development of neck and back pain as a result of spending long hours using smartphones, tablets, and computers. It is indicated that musculoskeletal discomfort can be significantly lowered with continuous monitoring and timely correction of the sitting posture, and spinal problems can be prevented over a long period. This paper presents a real-time posture monitoring system that would identify and correct poor seating habits. The system is characterized by a smart wearable belt that has the inertial sensors that take the posture-related data. This data is sent over the Wi-Fi to a cloud server, where it is processed to detect the movements that are not related to posture. The processed outputs are further forwarded to Android and iOS mobile applications, where the users are able to monitor their history of postures as well as get alerts. The smart belt may also give a vibration feedback on the need to make an instant correction in case of poor posture. The effectiveness of the system is confirmed by the test results, which is a relatively inexpensive and easy-to-use system to enhance ergonomic awareness and healthier posture behaviors