This study aimed to evaluate the surgical outcomes of auricular reconstruction by comparing the anthropometric differences between the reconstructed and normal auricles. Cross-sectional study. All microtia patients who underwent surgery at Airlangga University Hospital, Indonesia. Patients with unilateral microtia who had completed auricular reconstruction using autologous costal cartilage at Airlangga University Hospital, with a more than 3 months follow-up between 2019 and 2022. Primary data were obtained through auricle photographs, and a medical engineer performed anthropometric measurements. The data were analyzed using a paired