How to Calculate Your Macros for Any Fitness Goal

What Are Macros?

Macronutrients — or "macros" — are the three main categories of nutrients that provide calories: protein (4 calories per gram), carbohydrates (4 calories per gram), and fat (9 calories per gram). Unlike counting total calories alone, tracking macros ensures you're getting the right balance of nutrients to support your specific goal, whether that's losing fat, building muscle, or improving athletic performance.

Step 1: Calculate Your TDEE

Before setting macros, you need your Total Daily Energy Expenditure (TDEE) — the total calories you burn per day. Start with your BMR (use our BMR Calculator) and multiply by your activity level: sedentary (×1.2), lightly active (×1.375), moderately active (×1.55), very active (×1.725).

Step 2: Set Your Calorie Target

Adjust your TDEE based on your goal: for fat loss, subtract 300–500 calories (a moderate deficit); for muscle gain, add 200–300 calories (a lean bulk); for maintenance, eat at TDEE. Avoid extreme deficits above 1,000 calories/day as they lead to muscle loss and metabolic adaptation.

Step 3: Set Your Protein

Protein is the most important macro for body composition. Research consistently shows that 0.7–1.0 grams of protein per pound of bodyweight (1.6–2.2g per kg) is optimal for muscle retention during a cut and muscle growth during a bulk. A 160 lb person should aim for 112–160g of protein per day. Set this first before allocating remaining calories to carbs and fat.

Step 4: Set Your Fat

Fat is essential for hormone production, brain function, and absorption of fat-soluble vitamins (A, D, E, K). A minimum of 0.35g per pound of bodyweight (0.8g/kg) is recommended. Most people do well with fat comprising 25–35% of total calories. Don't go below 20% fat as it can negatively impact testosterone and estrogen levels.

Step 5: Fill the Rest with Carbohydrates

After setting protein and fat, allocate remaining calories to carbohydrates. Carbs fuel workouts and support recovery — athletes and those training 4+ days per week benefit from higher carb intakes. Prioritize complex carbs (oats, rice, potatoes, fruit) over refined carbs for sustained energy and better satiety.

The Bottom Line

Macro tracking is more effective than calorie counting alone because it ensures nutritional quality, not just quantity. Use our Macro Calculator to get your personalized macro targets in seconds, and pair it with our Calorie Calculator for a complete nutrition plan.