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About the Carbohydrate Calculator
The Carbohydrate Calculator estimates how many grams of carbohydrates you need each day based on your energy needs and fitness goals. It outputs your daily calorie target, the recommended carbohydrate grams, and the calorie share carbs should cover.
The calculation starts with the Mifflin-St Jeor equation to estimate basal metabolic rate. It multiplies that value by an activity factor to find total daily energy expenditure, applies your selected carbohydrate percentage, and converts calories to grams at 4 calories per gram. You enter age, sex, height, weight, activity level, and goal. Choose a lower percentage for fat loss and a higher one for endurance training, and consider a dietitian for personalized guidance.
- Enter your age, sex, height, and weight.
- Select your activity level and fitness goal.
- Read your daily carbohydrate grams in the results.