Purpose: The purpose of this study was to develop a family-centered care assessment scale for the parents of hospitalized children and to evaluate the psychometric characteristics of the new scale. Method: This is a methodological study carried out in three phases. The study was conducted between on September 2017 and February 2018 with the parents of 360 children treated at the pediatric clinics of two medical faculty hospitals in Konya. Design/Methods: The study was conducted with parents (n = 360). The data was collected via the Socio-demographic Information Form, the Family-Centered Care Scale (parallel form) and the draft scale developed by the researcher. Data was analyzed by construct validity index, exploratory and confirmatory factor analyses. End of the exploratory factor analysis FCCAS consisted of 21 items and three sub-dimensions. The content validity index was 0.92. The internal consistency coefficient (Cronbach's Alpha) was 0.94 for the total scale. The strong correlations was found between test and re-test (r = 0.90, p < .001). Confirmatory factor analysis has confirmed the three-factor structure. Conclusion: In this study developed family-centered care assessment scale (FCCAS) is a valid and reliable measurement tool. Practice implications: This scale can be used to evaluate family-centered care in pediatric clinics (excluding neonatal care units). It can be used as a measurement tool in descriptive and intervention studies examining family centered care.