The European Credit Transfer and Accumulation System “European Credits Transfer System” (ECTS), has been established to make each degree, each programme of study or even a single part of a programme of study measurable and valued in credits. It is a tool of the European Higher Education Area (EHEA) to increase the transparency of studies and improve the quality of higher education.
The detailed ECTS guide can be found here: ECTS User's Guide 2015