In recent years several studies have been developed and proposed regarding how to determine and assign to ECTS curriculum. However, there is no single magic formula for the transfer of existing systems in the various countries of the Union, the ECTS system. What is clear in all cases, is that the unit of measurement is the time commitment of students. To start this process, the UOC have developed an instrument to measure student workload. The criteria underpinning this tool are based on tasks and actions undertaken by the students during the development of a subject.