To obtain a Ph.D. degree, a student typically needs to complete coursework and conduct extensive research in their field of expertise. The duration for earning a Ph.D. varies significantly by discipline, generally ranging from 2 to 10 years. Most students can expect an average timeline of about 5-6 years post-undergraduate studies, with 2-3 years dedicated to obtaining a Master's degree and an additional 2-5 years for the Ph.D. The majority of the time spent in a Ph.D. program focuses on research work. Some students may choose to bypass a Master's degree and pursue a Ph.D. directly, with an estimated 6 years needed for completion, including 2 years for classes and 4 years for research.