Among the various materials used for thin film coatings, polystyrene, an aromatic synthetic polymer constructed of styrene monomers, has a wide range of applications and prevalent usage due to its mechanical strength, transparency, and ease of processing , making it a compelling subject of investigation. Polystyrene thin films have applications ranging from optoelectronics, bioengineering surfaces, photovoltaics, protective coatings, modifying index of refraction, photoresists, etc. . This paper delves into the dynamic relationship between polystyrene thin film thickness, molecular weight, and solution concentration when spin coating polystyrene.