How many hours in one semester of college?

If you are referring to actual class contact hours, for colleges and universities that operate on a regular semester system, it depends on the number of credits the student registers for. One credit is equivalent to 16 hours of class contact time for the semester. Thus, a three credit course requires 48 hours of class contact time. The average full-time load is 15 credits, therefore the total class contact time for the semester would be 240 hours for the semester, and typically broken down to 15 hours of class per week for the length of the semester.