Background/purpose: Student involvement in quality and useful activities during college can provide valuable experience to become a skilled person. Existing research so far has not focused on using students' free time at university, so there is no data or information about student activities during free time. This study will fill the gap in the theory about the use of students' free time in college. Therefore, this study aims to determine the use of students' free time in utilizing facilities available in the university environment and the factors that influence it. Materials/methods: This study used a mixed-method approach. The quantitative research involved a sample of 251 students of Universitas Negeri Yogyakarta. The data collection instrument used was a questionnaire. Data analysis used descriptive and inferential statistical techniques. On the other hand, qualitative research involves students who have filled out questionnaires and then been interviewed in depth. Data analysis used Miles & Huberman's interaction model. Results: The quantitative research findings showed that student program facilities, such as reasoning, arts, sports, welfare, and special fields, have a positive and significant influence on student engagement (t value>1.96, [alpha] = 5%), especially in relation to leisure time use. The qualitative research findings revealed four factors that influence student engagement: family encouragement, peers, course and department environment, and availability of facilities. Conclusion: The facilities in the university environment greatly influence the use of students' free time by considering the four important factors. This study provides implications and recommendations for each university in formulating, planning, and providing policies and educational facilities that are pro-student. Facilities in the university environment need to be improved in quantity and quality so that they can impact students' abilities and skills in the future.