Nutrition & Energy Calculators

Find how many calories to eat per day to lose, maintain, or gain weight, with targets at every rate of change and a safety floor for very low intakes.

Work out how many calories you burn per day from your BMR and activity level, and see your TDEE at every activity level side by side.

Calculate your basal metabolic rate with the Mifflin-St Jeor, Harris-Benedict, or Katch-McArdle equation, and see how the three compare for your body.

Split your daily calories into protein, carbohydrate, and fat targets in grams, across balanced, high-protein, low-carb, keto, and high-carb styles.

Find how much protein to eat per day in grams, based on your body weight, age, and whether you are maintaining, building muscle, or losing fat.

Work out how much water to drink per day from your body weight, exercise, and climate — in cups, fluid ounces, and litres.