How to Calculate Your Macros

Why Macros Matter More Than Calories

Counting calories tells you how much to eat. Counting macros tells you what to eat. Two people eating 2,200 calories per day can have completely different body compositions depending on their macro split. One might be building muscle while the other is losing it.

Macronutrients are the three categories of nutrients your body uses in large amounts: protein, carbohydrates, and fat. Each serves a different purpose, and the ratio you eat them in directly affects your energy, performance, recovery, and body composition.

Step 1: Find Your Calories

Before you can calculate macros, you need a calorie target. This starts with your TDEE (Total Daily Energy Expenditure) — the total number of calories you burn in a day. Then you adjust based on your goal: subtract 500 for fat loss, add 250-500 for muscle gain, or eat at maintenance.

Step 2: Set Your Protein

Protein is the most important macro for body composition. It builds and repairs muscle, keeps you full, and has the highest thermic effect (your body burns more calories digesting protein than carbs or fat).

The evidence-based range is 0.7 to 1.0 grams per pound of body weight. If you are cutting (losing fat), aim for the higher end (1g/lb) to preserve muscle. If you are bulking, 0.8g/lb is sufficient.

Step 3: Set Your Fat

Dietary fat is essential for hormone production, vitamin absorption, and brain function. Never go below 20% of total calories from fat. A good range is 25-35%. For most people, 30% is the sweet spot.

Fat has 9 calories per gram, so at 2,200 calories with 30% from fat: 2,200 x 0.30 = 660 calories from fat = 73 grams of fat per day.

Step 4: Fill the Rest with Carbs

Whatever calories remain after protein and fat go to carbs. Carbs are your primary fuel source for intense exercise. If you train hard, you need them. Carbs have 4 calories per gram.

There is no magic macro ratio. The "best" split is the one you can stick to consistently while hitting your protein target and staying within your calorie budget. Everything else is personal preference.