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Evidence-based reading on calories, weight loss and nutrition — no fads, no miracle promises.

How Many Calories Should I Eat to Lose Weight?How Many Calories Should I Eat to Lose Weight?Learn how to calculate a healthy calorie deficit, set realistic weight loss goals, protect muscle, and overcome plateaus with sustainable diet strategies.Jul 14, 2026What Is a Calorie Deficit? (And Why It's the Only Way Diets Work)What Is a Calorie Deficit? (And Why It's the Only Way Diets Work)Learn how a calorie deficit drives every successful diet, how your body uses energy, and how to build a realistic weight loss ...Jul 14, 2026

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Calorie CalculatorHow many calories you need each day to maintain, lose or gain weight.BMI CalculatorBody Mass Index, weight category and your healthy weight range.TDEE CalculatorTotal Daily Energy Expenditure — maintenance calories with activity.BMR CalculatorBasal Metabolic Rate using Mifflin-St Jeor, Harris-Benedict or Katch-McArdle.Body Fat CalculatorBody fat percentage with the U.S. Navy tape method, plus lean mass.Ideal Weight CalculatorIdeal body weight from four peer-reviewed formulas plus the healthy BMI range.Macro CalculatorDaily protein, carbs and fat in grams for your calorie goal and diet style.Calories Burned CalculatorCalories burned by walking, running, cycling and 30+ activities (MET-based).Calorie Deficit CalculatorThe daily deficit you need to reach your goal weight by a target date.