One of the characteristics of a Muslim who is committed to his religion is to avoid himself from consuming foods that are forbidden by the religion. The Mualaf community is a group that has just embraced Islam and usually learns Islam in stages, including aspects that affect consumerism in a food product. The objective of this study is to look at the level of knowledge and perception of mualaf on halal food products. Furthermore, to analyze their attitudes towards consumerism of food products in living life as a new Muslim. This study uses a quantitative method through the distribution of questionnaires to 110 mualafs in Terengganu. Data were analyzed through SPSS 25.0 software using percentage, mean, standard deviation, t-test and One-way Anova. Overall, the results of the study based on demography show that he level of knowledge, perception and attitude of mualaf in Terengganu in taking and using halal products is high. Mean knowledge and perception of female mualafs is higher than males but there is no significant. Similarly, from the aspect of race category, age level, level of education, occupation and period of conversion to Islam, the results also show that the mean is not significant. However, it was found that the type of job has a significant relationship in influencing converts in behavioral aspects. These findings are important because they are able to provide information to the Religious Council and related bodies about the need for continuous guidance given to converts on the importance of Islamic consumerism