Use the calculator below to determine how much of a grain/bread item you should serve each child to meet CACFP meal pattern requirements. All you need is the Nutrition Facts Label from the food item you plan to serve. Once you have the label, plug in the serving size units and weight of the serving into the calculator. You will be given the minimum serving portion for both the Preschool (1-4) and School Age (5-12) groups. Use the sample label below to see where to find the serving units and weight information.