Popcorn

Popcorn has 479 kcal per 100 g. One serving (29 g) is about 139 kcal.

Popcorn contains 13.8 g of protein per 100 g — about 4 g per 29 g serving.

Yes — 13.8 g of protein per 100 g, supplying 11% of its calories. That makes it a good protein source.

Yes — only 0 g of sugar per 100 g. Most of its 55.2 g of carbs come from starch and fiber rather than sugar.

It provides 10.3 g of fiber per 100 g — 37% of the daily value, making it a high-fiber food.

Nutri-Score weighs negatives (calories, sugar, saturated fat, sodium) against positives (fiber, protein) per 100 g. Points against come from calorie density (479 kcal), saturated fat (3.4 g), sodium (410 mg); points in favor come from fiber (10.3 g), protein (13.8 g). Overall that places it in band B.

About 21 g of Popcorn equals 100 kcal. It is energy-dense, so small amounts add up quickly.

Yes — 479 kcal per 100 g makes it calorie-dense; a 50 g portion is already about 240 kcal.