CFS Section is widely used in structural system. As we know that the CFS is light gauge steel section. Also cold formed steel sections are economic due to its low weight than the hot rolled section. There is need of checking buckling behavior of cold formed section. So, economic section can develop by considering these different conditions. For this study buckling mode is observed for different length by keeping section thickness and cross section constant. Also the load carrying capacity is calculated by using abaqus software for different length of section.