A 1-cup serving of air-popped popcorn has 6.22 grams of carbohydrates and 1.2 grams of fiber. Since fiber is indigestible, the total net carbohydrate count for a serving of popcorn is just 5.02 grams.
Popcorn with butter has slightly more carbohydrates. Buttered air-popped popcorn has about 5.68 net grams of carbohydrates, while buttered oil-popped popcorn has 6.27 net grams. Orville Redenbacher’s Smart Pop butter popcorn has just 2 net grams of carbohydrates per serving, while the brand’s Movie Theater butter popcorn has 3 grams per serving.
Caramel or sugar-coated popcorn has around 25.88 carbohydrates per serving. Caramel-coated popcorn with peanuts has 32.72 carbs per serving.