Global challenges to children's health are rooted in social and environmental determinants. The UN Convention on the Rights of the Child (CRC) articulates the rights required to address these civil-political, social, economic and cultural determinants of child well-being. The principles of child rights-universality, interdependence and accountability-define the tenets of social justice and health equity required to ensure all rights accrue to all children, and the accountability of individuals and organisations (duty-bearers) to ensure these rights are fulfilled. Together, the CRC and child rights principles establish the structure and function of a child rights-based approach (CRBA) to child health and well-being-that provides the strategies and tools to transform child health practice into a rights, justice and equity-based paradigm. The 30th anniversary of the CRC is an opportune time to translate a CRBA to health and well-being into a global practice of paediatrics and child health.