An experimental study was conducted to investigate how the arrangement of conical fins enhances the performance of a heat sink under forced convection conditions. Two types of heat sinks were manufactured: a staggered heat sink and an inline heat sink. The heat sink was manufactured from AL383 alloy, and the dimensions of the fins are 50 mm in height, 12 mm in diameter, with a distance of 30 mm between them. The heat sink is positioned within a horizontal channel. Five different speeds, ranging from 1.5 to 4 m/s, were utilized with a constant heat source. A variety of variables were examined, including heat dissipation, heat transfer coefficient, temperature distribution along the fin, Reynolds number (Re), Nusselt number (Nu), and heat sink efficiency. It’s evident from the results that the staggered heat sinks disperse heat more effectively than the inline heat sink, exhibiting an 8.78% increase in heat dissipation at Re 15000. Furthermore, the staggered heat sink demonstrates a significant improvement in the heat transfer coefficient (h), with a 35% enhancement at Re 15000 compared to the inline heat sink. The Nusselt number of staggered heat sinks increases with an increase in Reynolds number. The ANSYS program was utilized to determine the optimal height-to-diameter (B/d) ratio for the conical fin. While the diameter could vary from 8 mm to 16 mm, the height remained constant at 50 mm. Consequently, the ratio was tested at (6.2, 5, 4, 3.5, 3.1). The staggered heat sink dissipated 8.78% more heat than the linear heat sink at Re 15000. The heat transfer coefficient (h) value increases by 35% at Re 15000 for the staggered heat sink compared with the linear heat sink. Additionally, the Nusselt number increases with the rise in the Reynolds number (Re) and is higher for the staggered then the inline heat sink by 45% at Re 15000. Also, the results clearly convey the finding that the efficiency at Re 15000, the staggered heat sink outperforms the inline heat sink by 7.24%. Additionally, the optimal ratio for dispersing heats throughout the fin’s length was (B/d=4).