How do I choose a major on the UC application if I’m still undecided?

If you’re still undecided, the safest approach on the UC application is to choose “undeclared” or “undecided” when that option is available, and only list a specific major if it is a real current interest you could honestly support in your application. At many UC campuses, major choice matters a lot more for selective or capped majors like engineering, computer science, business economics, nursing, or biological sciences than it does for students applying undeclared in a broader college. What matters most is that your choice matches your coursework and activities well enough that it does not look random.

The UC system reviews applicants differently depending on campus and major. Some campuses admit by major or give extra scrutiny to highly impacted majors, while others admit to a college first and major later. That means picking a capped major just because it sounds impressive can actually make admission harder, and switching into that major after enrolling is often difficult or sometimes nearly impossible.

If you have a few related interests, choose the one that best fits what you have already done in high school. For example, if your classes and activities lean toward math, coding, and robotics, applying as English looks less coherent than applying undeclared in letters and science or applying to a related major you genuinely like. If your interests are spread out and no clear pattern stands out, undeclared is usually the more honest and strategic choice.

Also pay attention to each UC campus separately, because the options and rules vary. Some campuses allow alternate majors, and that can be useful if your first choice is selective and your second choice is a less restricted field you would still be happy studying.

Students commonly apply undeclared when they are unsure, so that choice is not unusual. The bigger mistake is choosing a highly selective major you do not actually want just to fill the box.