Palm fatty acid distillate (PFAD) and soybean deodorized distillate (SDD) are two prominent byproducts in the vegetable oil industry; hence, the objective of this paper was to characterize the physicochemical properties of palm fatty acid distillate (PFAD) and soybean deodorized distillate (SDD) biodiesel production. Various physicochemical properties, including fatty acid composition, acid value, iodine value, saponification value, and viscosity, underwent analysis. Moreover, the study identified impurities like moisture, free fatty acids, and unsaponifiable matter. This thorough assessment offers essential insights into the materials' suitability for biodiesel production, thus informing potential industrial applications. It underscores the significance of selecting appropriate feedstocks in biodiesel manufacturing, ensuring optimal quality and efficiency. By considering these factors, stakeholders can make informed decisions regarding material sourcing and processing methods, ultimately enhancing overall production outcomes. Additionally, this evaluation facilitates the identification of potential challenges and opportunities in the biodiesel industry, contributing to informed decision-making and strategic planning. Furthermore, the potential environmental and economic benefits of utilizing these byproducts in biodiesel production are discussed.