The final step will take the total weight of the asphalt required and convert it into tons. Take the last number you found and divide it by 2,000. [total asphalt required] / 2,000 =. Click here to know more about it. In this manner, how do you convert square feet to tons of asphalt? A square yard is 9 sq ft.For an asphalt pavement 4” thick the volume would be; 9 x (4/12)= 3 cubic feet.To determine how many tons or part there of is required divide by pounds per ton or 2000 for an imperial short ton.. Also Know, how do I calculate how much asphalt I need?. Converting from cubic feet to metric tons (or tonnes) is very easy. We know that 1 ft³ = 0.027863514087498 t . So, to convert 50 ft³ to t, multiply 50 ft³ by 0.027863514087498 t. 50 ft³ = 50 × 0.027863514087498 t. 50 ft³ = 1.3931757043749 t. Therefore, 50 cubic feet converted to metric tons (or tonnes) is equal to 1.3931757043749 t.