60% of a diet should be carbohydrates. In a 2,200 calorie diet, that is about 1,320 calories from carbs. The grams of this will vary depending on the type of carbs and carb sources (oatmeal vs. bread...
A carbohydrate is mass, and "gram" is a unit to measure the weight of mass. So any given mass of carbohydrate will have a weight measurable in grams. For instance, 1 cup of corn weighs 166 grams. Of...