What is the caloric value of protein per gram?

The caloric value of protein is indeed 4 calories per gram. This value is a standard measure used in nutrition to determine the energy provided by macronutrients. Protein is one of the three primary macronutrients, alongside carbohydrates and fats, and understanding its caloric contribution is vital for dietary planning. In contrast to protein, carbohydrates also yield 4 calories per gram, while fats contribute a higher amount at 9 calories per gram. This distinction is crucial when considering overall energy intake and the role each macronutrient plays in bodily functions and athletic performance.