To determine how much asphalt you will need for the project, multiply the area's cubic feet measurement by 148 PCF.For example, if the area is 40 cubic feet, then the formula is: 40 cubic feet x 148 PCF = 5,920 pounds of asphalt mix.Next, convert your pounds of asphalt mix value to tons. According to Asphalt Institute, 2,000 pounds …