Tasty Kellogg's® Froot Loops®; Great for breakrooms; Just add milk! oz. super-size-to-go serving cups; Assorted fruit flavors; Six individual serving. Sweetened multi-grain cereal. Natural fruit flavors. calories per pack. Whole Grain: 13 g or more per serving. Eat 48 g or more of whole grains daily. Calories in Kellogg's 1/2 Cup Fruit Loops. Find nutrition facts for Kellogg's 1/2 Cup Fruit Loops and over other foods in biosphaere.info's food.