Are college credits are determined by hour?

Yes, college credits are generally determined by the number of hours a course meets per week, over the course of a semester or quarter. A 3-credit course typically meets for three hours per week, while a 1-credit course might meet for one hour per week. However, the exact calculation can vary slightly depending on the institution and the type of course (e.g., lab courses often have more credit hours for the same number of contact hours).