Convert pounds to ounces: Convert pounds to ounces.We know that 1 pound equals 16 ounces. So, to find out how many ounces are in 3 pounds, we multiply 3 by 16.Calculation: 3 pounds ×16 ounces/pound = 48 ounces.
Add additional ounces: Add the additional ounces to the total from Step 1.We already have 48 ounces from the 3 pounds. Now, we add the extra 11 ounces.Calculation: 48 ounces +11 ounces =59 ounces.