140 calories, 2.5 g fat (0.5 g saturated fat), 190 mg sodium, 29 g carbohydrates (4 g fiber, 2 g sugar), and 5 g protein are the nutritional values per 1 12 cup serving. Cheerios are a staple for a reason. Cheerios is one of the most well-known cereals available that is actually low in added sugar, including only 2 grams per serving.