Cheerios

Cheerios by Nestle has 377 kcal per 100 g. One serving (30 g) is about 113 kcal.

Cheerios contains 9.3 g of protein per 100 g — about 2.8 g per 30 g serving.

Yes — carbohydrates provide 80% of its calories (71.3 g per 100 g, of which 22.3 g is sugar). It also delivers 9 g of fiber.

Yes — 22.3 g of sugar per 100 g, roughly 6 teaspoons. Sugar makes up 31% of its carbohydrates.

It provides 9 g of fiber per 100 g — 32% 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 (377 kcal), sugar (22.3 g); points in favor come from fiber (9 g), protein (9.3 g). Overall that places it in band B.

About 27 g of Cheerios equals 100 kcal. It is energy-dense, so small amounts add up quickly.

Yes — 377 kcal per 100 g makes it calorie-dense; a 50 g portion is already about 188 kcal.