How many calories are in one gram of protein?

One gram of protein provides 4 calories. This is a key aspect of nutrition and is fundamental for understanding macronutrient caloric values. Proteins are essential macronutrients that play a vital role in the body, including the building and repair of tissues, hormone production, and supporting immune functions.

The caloric value of protein is consistent across various dietary guidelines and nutritional resources. This standardization allows for accurate dietary planning and nutrient tracking, which is particularly important for individuals managing their weight or specific health conditions. Understanding that protein yields 4 calories per gram helps individuals make informed decisions about their diet, ensuring they meet their macronutrient needs effectively.