How many calories per gram are provided by carbohydrates?

Carbohydrates provide 4 calories per gram, which is a well-established figure in nutrition. This value is fundamental for understanding energy intake from macronutrients. Carbohydrates, which include sugars, starches, and fiber, represent a primary energy source for the body. When consumed, they are metabolized to provide quick energy, particularly crucial for physical activities and brain function.

This knowledge is essential for dietary planning and understanding macronutrient balance in nutrition, as it helps individuals gauge how much energy they derive from carbohydrate sources in their meals. The values for other macronutrients differ, with fats providing 9 calories per gram and proteins supplying 4 calories per gram as well. Knowing these caloric values helps in making informed choices about food and maintaining a balanced diet.