FUBiS is the International Summer and Winter University of Freie Universität Berlin, an intensive academic short-term program that takes place in one winter and two summer terms. Students from all over the world can choose between German language courses and subject courses held in English and German that are offered either on-site in Berlin or, in some cases, online. Some courses in the summer terms can be combined with each other, allowing, students to tailor their schedule according to their interests. For their achievements the students receive ECTS credits which they may count toward their degrees at their home universities.

Students from all over the world participate in FUBiS, creating an international environment which promotes the learning and use of intercultural competency skills. Participation in the FUBiS program is an academic, cultural and personal enrichment for students.