The significance of adhesive in the production of bio-briquettes emerges as a pivotal element in attaining success throughout their creation and utilization. Adhesive assumes a central function in consolidating the raw components of bio–briquettes into a dense structure that can be efficiently combusted. The use of adhesives, such as polyvinyl acetate or molasses, affects the physical and chemical properties of bio–briquettes, including their mechanical strength, moisture content, and calorific value. This study aims to optimize the use of adhesives to enhance the durability and performance of bio–briquettes. The optimum result of this research is bio-briquette products that use 67 % polyvinyl acetate adhesive, with a durability of 100 %, moisture content of 3.3 %, density of 1.23 g cm-3, and calorific value of 3 572.67 cal g–1.