A BS degree stands for Bachelor of Science. It is a four-year undergraduate degree awarded by colleges and universities, typically in fields that emphasize math, science, research methods, or technical skills. The abbreviation is sometimes written as B.S. (with periods) in formal academic contexts, and outside the United States you may see it written as BSc or B.Sc.
What a Bachelor of Science Covers
A BS degree is built around structured coursework in a specific major, with a heavier emphasis on quantitative, analytical, or laboratory-based learning than its counterpart, the Bachelor of Arts. Programs generally require at least 120 credit hours and take four years of full-time study to complete, though some students finish faster or slower depending on course load and transfer credits.
Common fields where schools award a BS include biology, chemistry, engineering, computer science, nursing, business, and mathematics. But the degree isn’t limited to hard sciences. You can earn a BS in psychology, economics, criminal justice, or even communications, depending on the university. The “science” in Bachelor of Science refers less to the subject matter itself and more to the program’s approach: structured around data, research, or applied technical skills rather than broad liberal arts exploration.
How a BS Differs From a BA
The other common bachelor’s degree is the BA, or Bachelor of Arts, which leans toward the humanities, languages, and social sciences. The practical difference comes down to how your coursework is divided. A BS program typically requires more classes directly tied to your major, along with additional math, science, or lab requirements. A BA program tends to include more electives and may require foreign language or cultural studies instead.
Some subjects offer both options. Psychology is a good example: a BA in psychology might include language and culture coursework, while a BS in psychology replaces those with research methods and additional science classes. Neither version is inherently “better.” The BA path gives you broader exposure across disciplines, while the BS path gives you deeper technical preparation in your field. Which one matters more depends on what you plan to do after graduation and what graduate programs or employers in your field prefer.
Fields That Typically Award a BS
Several of the most popular undergraduate fields in the country lean toward BS degrees. In the 2021-22 academic year, according to the National Center for Education Statistics, the most common bachelor’s degrees fell in these categories:
- Business: 375,400 degrees, representing 19% of all bachelor’s degrees awarded
- Health professions: 263,800 degrees (13%)
- Biological and biomedical sciences: 131,500 degrees (7%)
- Engineering: 123,000 degrees (6%)
Most programs in these areas grant a BS rather than a BA, though the exact degree title varies by school. Business programs, for instance, might award a BS, a Bachelor of Business Administration (BBA), or even a BA in business depending on the institution. Always check the specific degree title listed by the school you’re considering, since it shows up on your diploma and transcript exactly as the university designates it.
Does the BS vs. BA Distinction Matter?
For most jobs, employers care far more about your major, your skills, and your experience than whether your diploma says BS or BA. A hiring manager looking at two candidates with degrees in economics is unlikely to favor one over the other based solely on the degree type. Where the distinction can matter is in technical or research-heavy fields, where a BS signals that you completed more rigorous quantitative coursework, and in graduate school admissions, where certain programs expect specific prerequisite courses that a BS track is more likely to include.
If you’re choosing between a BS and BA version of the same major, think about what comes next. Planning to apply to a research-oriented graduate program or enter a technical career? The BS path builds a stronger foundation. Interested in a broader education that combines your major with writing, languages, or the arts? The BA gives you more room to explore. Either way, you’re earning a full bachelor’s degree that qualifies you for the same entry-level positions and the same graduate school applications.