Empowerment is a concept that has become increasingly used over recent years. However, little research has been undertaken into how empowerment can be evaluated, particularly in the case of young people. The aim of this article is to present an inventory of dimensions and indicators of youth empowerment. The article describes the various phases in the construction and validation of the inventory. These phases were (1) a contrast of the inventory of dimensions and indicators against specialized published writings on youth empowerment; (2) the validation of the resulting inventory by experts; and (3) a contrast with young people through four participatory evaluation processes and six life stories. The tool is scientifically and practically useful and enables the impact of youth empowerment programmes to be evaluated; it also serves to plan and implement socio-educational processes aimed at influencing the empowerment of young people.