The study looked at how different factors like profitability, capital structure, asset structure, and firm age affect the value of manufacturing companies. They used data from 89 companies listed on the Indonesia Stock Exchange between 2018 and 2020. The results showed that profitability and capital structure have a positive impact on firm value, while asset structure doesn't make a significant difference. Surprisingly, firm age was found to have a negative effect on firm value. This research can help investors understand how these factors influence company values and make better investment decisions.