What "macros" actually means
Macros are the three macronutrients that supply all your calories: protein, carbohydrates, and fat. Counting macros means hitting daily gram targets for each, rather than just watching total calories — which gives you more control over body composition, energy, and hunger.
The math anchor: protein and carbohydrates each provide 4 calories per gram, and fat provides 9. So your macro targets always add up to your calorie target.
Step 1 — Set your calorie target
Everything starts from your daily calories. Estimate your maintenance calories (what holds your weight steady), then adjust: a deficit to lose fat, a surplus to build muscle, or maintenance to recomp. Our macro calculator does this from your age, height, weight, and activity in a few seconds.
Step 2 — Split calories into macros
A balanced starting split is roughly 30% protein, 35% carbs, 35% fat — but protein is the number that matters most. Aim for 1.6–2.2 g of protein per kilogram of body weight (about 0.7–1 g per pound) if you train. Fill the rest with carbs and fat to taste.
- Protein: sets muscle retention and satiety — anchor this first
- Fat: keep at least ~0.5 g/kg for hormones; adjust up if you prefer lower carb
- Carbs: whatever calories remain — they fuel training and are the easiest lever to move
Step 3 — Track what you eat
This is where counting happens: log each food and its portion, and the grams add up against your targets. A weighing scale is most accurate at first; a tracker with a food database makes it fast enough to actually keep doing. The goal is to land near your protein target every day and roughly within your calories.
Step 4 — Adjust with your results
Macros are a starting estimate, not a law. Track your weight and how you look and feel for two to three weeks, then nudge calories up or down by 100–200 if the trend is not matching your goal. Keep protein steady and adjust carbs or fat.