The difference between Rated Capacity and Measured Capacity is: Mearsured and Rated Capacity are different terms for the same concept. Rated Capacity is based on Utilization & Efficiency where as Measured Capacity considers only historical output. Measured Capacity requires time studies of the process where Rated Capacity uses available time and efficiency calculations. Measured capacity is based on Utilization & Efficiency where as Rated Capacity considers only historical output