Religious conversion is drifted by two dimensions; personal and social dimensions. This research focuses on the social dimension of religious conversion, which emphasizes on pre-conversion and post-conversion. The object of the research is the memoir, Through Knowledge I found my peace after September 11, 2001 written by Sakinah Alaflah Cardona. David Snow and Richard Machalek's sociology of conversion model applied in analysing memoir. The research finding is the role of the 9/11 event in the conversion process, equality in Islam, and advocate's role have a significant influence in the religious conversion process. Social dimension also influences postconversion changes, such as wearing a Hijab, the changes of social identity, and Muslim community engagement. In post-conversion, some converts have to face never-ending struggle and learning to cope with some social context changes.

Keywords : Social Dimension, Religious Conversion, Memoir.