Macro Counting: Complete Beginner's Guide (2026)

What Is Macro Counting?

Macro counting — formally called tracking macronutrients — is the practice of monitoring your daily intake of the three energy-providing macronutrients: protein, carbohydrates, and fat. Unlike simple calorie counting, macro tracking ensures that your calorie budget is allocated in proportions that support your specific body composition goal, whether that is fat loss, muscle gain, or performance.

Each macronutrient provides a specific number of calories per gram: protein provides 4 kcal/g, carbohydrates 4 kcal/g, and fat 9 kcal/g. Alcohol provides 7 kcal/g and is sometimes tracked as a fourth macronutrient.

Step 1: Calculate Your TDEE

Before setting macros, you need your daily calorie target. Calculate your TDEE using the Mifflin-St Jeor equation multiplied by your activity factor. Then adjust for your goal: subtract 500 calories for weight loss, add 200–300 for muscle gain, or eat at maintenance for recomposition.

Step 2: Set Protein First

Protein is the most important macro for body composition. Set it first and build around it. Target 1.6–2.4g per kilogram of body weight per day, depending on your goal and activity level. A 75kg moderately active person building muscle would target approximately 120–150g of protein per day (75 × 1.6–2.0g).

Step 3: Set Minimum Fat

Fat is essential for hormonal health, fat-soluble vitamin absorption, and cell membrane integrity. Never reduce fat below approximately 0.7–1.0g per kilogram of body weight. Very low fat diets (below 15% of calories) can impair testosterone and estrogen production, particularly in women. A 75kg person needs a minimum of approximately 52–75g of fat per day.

Step 4: Fill Remaining Calories with Carbohydrates

After setting protein and minimum fat, assign remaining calories to carbohydrates. Carbs are your body's preferred fuel for high-intensity exercise and are critical for workout performance. Higher carbohydrate allocations are particularly important for endurance athletes and those performing multiple high-intensity sessions per week.

Example Macro Setups by Goal

How to Track Macros

Use a food tracking app — MyFitnessPal, Cronometer, or MacroFactor are the most popular. Weigh food on a digital kitchen scale (in grams) for the first few weeks until you develop reliable portion estimation. Scan barcodes for packaged foods. Create custom entries for home-cooked meals. Log as close to real-time as possible to avoid forgetting items.