Calorie Source Calculator
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Calorie Sources
Calories, the units of energy in food, primarily come from three sources: carbohydrates, fats, and proteins. These macronutrients provide the energy needed for bodily functions and activities.
Use this calculator by entering in your fat, carbs and protein for any given food product (or the entire day) and see exactly what percentage of these macronutrients are the source of your calories.
Formula
1 fat gram = 9 calories
1 carb gram = 4 calories
1 protein gram = 4 calories
Results
Use the calculator to activate this chart.
The calculators and information on this website are based on generally accepted concepts and formulas. They are not intended to be medical advice, and you should consult your physician before making any changes to your nutrition, exercise, or lifestyle. The data submitted on this form is not stored.