Not knowing what you want to major in cannot hurt your application. In fact, at UChicago, we want our first-year students to arrive with a healthy intellectual curiosity, and to explore a wide variety of academic fields in our Core curriculum.
Students usually declare a major towards the end of their second year or the beginning of their third. And, of course, many students change their major (sometimes more than once), and some students double major, add a minor, etc. The breadth, focus, and direction of your academic career are really in your hands.
At UChicago, we believe in the value of a broad, rigorous liberal arts education, and we teach the fundamental skills: critical thinking, analytic reasoning, and persuasive writing. These are skills that will serve you well in any career. Certainly there are some majors that lend well to certain careers, but we’ve had philosophy majors go on to work in finance, English majors become doctors, and math majors find careers in the arts.