Tag: Macronutrient calories

One gram of fat provides 9 calories, more than double the energy offered by the same amount of protein or carbohydrates. Understanding how much cal is 1 g of fat is a critical first step in managing your energy intake and planning a balanced diet.

According to the Food and Nutrition Information Center (FNIC), one gram of fat contains 9 kcal, making it the most energy-dense macronutrient. This calorie count is more than double the energy provided by the same amount of protein or carbohydrates and is a fundamental piece of knowledge for understanding nutrition.

According to the Food and Agriculture Organization (FAO), for decades, food energy has been primarily calculated using standardized conversion factors known as the Atwater system. This system provides the definitive formula for the energy content of a food source by assigning average caloric values to each macronutrient.