What is the calorie content per gram of protein?

The calorie content per gram of protein is 4 calories. This value is established based on the biochemical composition of proteins and their utilization by the body. Proteins are made up of amino acids, and when metabolized, they provide energy in the form of calories.

One gram of protein, when consumed, yields approximately 4 calories of energy. This is an essential fact in nutritional science and plays a crucial role in dietary planning and understanding macronutrient contributions to total caloric intake.

Other macronutrients have different calorie values per gram, with carbohydrates also providing 4 calories per gram, fats providing 9 calories per gram, and alcohol providing 7 calories per gram. Understanding these values is vital when calculating daily energy requirements and when formulating balanced diets for individuals.