Calculate your optimal protein, carbs, and fats
Macronutrients—commonly called "macros"—are the three essential nutrients your body needs in large amounts to function properly: protein, carbohydrates, and fats. Unlike micronutrients (vitamins and minerals), macros provide energy (calories) and serve as the building blocks for tissue repair, hormone production, and countless metabolic processes.
Each macro plays a unique role in your health and fitness. Protein builds and repairs muscle tissue, supports immune function, and helps you feel full. Carbohydrates are your body's preferred energy source, fueling everything from intense workouts to brain function. Fats support hormone production, vitamin absorption, and provide long-lasting energy.
Understanding and tracking your macros allows you to optimize your nutrition for specific goals. Whether you're trying to lose fat, build muscle, or simply maintain your current physique, hitting your macro targets ensures you're getting the right nutrients in the right amounts.
Macros are calculated from your total daily calories. If you haven't determined your calorie needs yet, use our TDEE Calculator first. For protein-specific guidance based on your training, try the Protein Calculator.
We start with your TDEE (Total Daily Energy Expenditure), then adjust based on your goal:
For the most precise TDEE, calculate your body fat percentage first — the Katch-McArdle method (selected automatically when body fat % is known) is the most accurate formula available.
Based on your chosen diet type, we distribute calories across the three macros:
| Diet Type | Protein | Carbs | Fats | Best For |
|---|---|---|---|---|
| Balanced | 30% | 40% | 30% | General health, beginners |
| Low Carb | 35% | 25% | 40% | Fat loss, insulin sensitivity |
| High Protein | 40% | 35% | 25% | Muscle building, satiety |
| Keto | 25% | 5% | 70% | Ketosis, appetite control |
Using these conversions, we calculate the exact grams of each macro you need daily. For example, if your protein target is 600 calories (30% of 2000 kcal), that equals 150g of protein (600 ÷ 4).
Here are three example macro plans for different goals and diet types:
Profile: Office worker, lightly active
TDEE: 2,200 kcal
Goal Calories: 1,700 kcal (-500 deficit)
Protein: 149g (35%)
Carbs: 106g (25%)
Fats: 76g (40%)
Profile: Gym-goer, moderately active
TDEE: 2,500 kcal
Goal Calories: 2,500 kcal
Protein: 188g (30%)
Carbs: 250g (40%)
Fats: 83g (30%)
Profile: Athlete, very active
TDEE: 3,200 kcal
Goal Calories: 3,500 kcal (+300 surplus)
Protein: 350g (40%)
Carbs: 306g (35%)
Fats: 97g (25%)
Note: These are examples only. Your individual macro targets will vary based on your body weight, TDEE, and chosen diet type.
Macros (macronutrients) are protein, carbohydrates, and fats—the three nutrients your body needs in large amounts. Tracking macros is superior to just counting calories because it ensures you're getting the right balance of nutrients for your specific goals.
This calculator uses research-informed formulas to provide accurate macro targets based on your TDEE, body weight, and goals. However, all calculators provide estimates. We recommend using the calculator as a starting point, then adjusting based on your results over 2-4 weeks.
For most people pursuing fitness goals, research suggests 1.6-2.2g of protein per kilogram of body weight. This range supports muscle growth, recovery, and satiety. Athletes or those in a calorie deficit may benefit from the higher end (2.0-2.4g/kg).
For fat loss, prioritize protein (35-40% of calories) to preserve muscle mass and increase satiety. Moderate carbs (25-35%) timed around workouts provide energy. The key is creating a calorie deficit while hitting your protein target.
Yes, but it's challenging and typically only works for beginners, those returning after a break, or individuals with higher body fat. This is called "body recomposition." Eat at maintenance or slight deficit, prioritize protein (2.0-2.4g/kg), and lift progressively.
For simplicity and consistency, eating the same macros daily works well for most people. However, advanced strategies like carb cycling (higher carbs on training days) can be effective for athletes with specific performance goals.
Use a food tracking app like MyFitnessPal or Cronometer. Weigh your food with a digital kitchen scale for accuracy. Log everything you eat, including oils and condiments. After 1-2 weeks, tracking becomes second nature.
Perfection isn't required! Aim to hit your macros within ±5-10g for each macro. Focus on weekly averages rather than daily perfection. If you're consistently close to your targets (80% adherence), you'll see results.
Now that you know your macro targets, take the next step in your fitness journey with our personalized tools and programs.
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