Hospitalizations can be stressful for children, adolescents, and their parents, thus requires assessment and proper management. This study’s objective was to provide psychometric validation of the online version of the Escala Coping da Hospitalização, Adoecimento e Tratamento − Versão para Pais (COPHAT-P) [Coping Scale of Hospitalization, Illness and Treatment – parents version (COPHAT-P)]. A total of 98 Brazilian parents/legal guardians of hospitalized or previously hospitalized children participated. Participants completed a sociodemographic questionnaire along with the COPHAT-P and the Escala de Coping da Hospitalização − versão para cuidadores (COPE-H-Cuidador) [Hospitalization Coping Scale – caregiver version (COPE-H-Caregiver)]. Confirmatory Factor Analysis did not indicate a good fit. Three factors were extracted from the Exploratory Factor Analysis, which were further supported by network analyses. Convergent validity of the online version of the COPHAT-P was supported by its associations with the COPE-H-Caregiver, except for the “maladaptive coping” dimension. The online version of the COPHAT-P had high internal consistency (α=0.94). In sum, the online version of the COPHAT-P demonstrates satisfactory validity evidence.