How Much Fiber In Popped Popcorn?

How Much Fiber In Popped Popcorn? Air-popped popcorn is very high in fiber, calorie for calorie. However, if you add a lot of fat, the fiber-to-calorie ratio will decrease significantly. Fiber content: 1.15 grams per cup of air-popped popcorn, or 14.4 grams per 100 grams ( 37 ). Does popcorn lose fiber when popped? Fiber