Carbon steel is one of the most widely used types of steel, and its properties depend entirely on its carbon content. Carbon steel is used to manufacture a wide variety of products, including agricultural equipment, construction rods, automobile bodies, equipment, most types of cans and crates, and marine transportation equipment. However, in recent years, increased attention has been paid to the corrosion problems that occur in this steel and its industrial and engineering applications. Corrosion is a challenge for industrial and production facilities, especially for some equipment parts and tanks. Based on this, this research aims to study the corrosion rates of carbon steel, the most widely used metal, in several media with changes in time. Experiments were conducted on carbon steel in several different condition with two periods: the first was one month and the second was 40 days. The results were clear regarding the corrosion rate for each condition. In other words, the medium or location in which the metal is located has a significant impact on the corrosion rate. The results of this study confirmed that the corrosion rate of carbon steel varies depending on the location or medium in which it is located. Therefore, the highest corrosion rate was observed in salt water. It was also found that the longer the exposure time to the corrosive medium, the greater the corrosion rate, resulting loss weight........... Keywords:........... Carbon Steel, Corrosion, Weight Loss, Corrosion condition.