Fitness Calculator: Nutritional Needs Nutritional Needs Calculator: Percent Carbs, Proteins & Fats Nutritional Needs Calculator After you’ve used the calorie intake calculator to determine your daily caloric needs, use this nutritional needs calculator to find out how to break out those calories into carbohydrates, proteins and fats. Input your data below Enter your daily caloric needs: To determine your caloric needs use our Caloric needs calculator. Minimum Grams/Day Maximum Grams/Day Minimum Calories/Day Maximum Calories/Day Carbohydrates Proteins Fats Note: These calculations are based on National Institutes of Health/Institute of Medicine Healthy Macronutrient Distribution and provided by Welltech Solutions. Calculators are appropriate for healthy, non-pregnant adults 19 and older. Click on a link below to select a different Fitness Calculator Body Fat BMI Caloric Needs Ideal Weight Nutrition Pace Target Heart Rate