Rolled oats have a bit more fiber than quick oats. That being said, rolled oats have 5 grams of fiber per 1/2 cup serving while quick oats have 4.2 grams of fiber. Keep in mind that they are both nutrious whole grains and provide great nutritional values. Quick oats are a bit more processed than rolled oats with 170 calories per 1/2 cup while rolled oats has 200 calories per 1/2 cup.