Health & Fitness

What Are Macronutrients?

Macronutrients are the nutrients the body needs in large amounts for energy and structure: protein, carbohydrates, and fat. Protein and carbohydrates provide about 4 calories per gram, and fat about 9 calories per gram. Alcohol also provides calories (about 7 per gram) but is not a nutrient.

Calculating Calories From Macros

Calories = protein g × 4 + carbohydrate g × 4 + fat g × 9. 100 g protein, 200 g carbs, and 60 g fat equal 1,740 calories.

🧮 Calculate It Yourself

Put Macronutrients into practice with these free calculators — no sign-up, nothing stored.

🥚 Protein Intake Calculator Daily protein needs in grams for your weight and goal. Calculate → 🔥 Calorie Calculator (TDEE) Find your daily calorie needs using the Mifflin-St Jeor formula. Calculate →

🔗 Related Terms

Recommended Dietary Allowance (RDA) Total Daily Energy Expenditure (TDEE) Calorie Deficit Lean Body Mass

More Health & Fitness Terms

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Last updated: September 27, 2026. This definition is for general educational purposes only. It is not financial, investment, tax, legal, or medical advice, and it does not recommend any product or course of action. For decisions about your own situation, consult a qualified professional.