How many macros should you eat per day?

Macronutrients are the nutrients your body needs in large amounts that provide energy: protein, carbohydrates and fat. Unlike vitamins or minerals, macros make up most of the calories in what you eat.

When someone says they "hit their macros," they usually mean trying to get close each day to orienting grams of protein, carbs, and fat on top of a calorie total. It is not a perfect science or something you need to nail every day — it is a compass for eating with more intention.

In one sentence

Protein builds and repairs. Carbohydrates fuel movement and brain function. Fat supports hormones, cells, and reserves. All three provide energy and each plays roles the others cannot fully replace.

Calories measure total energy. Two meals with the same kcal can feel very different: one rich in protein and fiber often keeps you full longer; another heavy on processed foods may leave you hungry sooner even when the calorie count matches.

That is why, after estimating how many kcal fit your goal, it makes sense to split that energy across macros. Especially protein: in a deficit it helps preserve muscle; in a gaining phase it supports synthesis if you are training for strength.

• Calories only: useful for checking whether you are in deficit, maintenance, or surplus.
• Calories and macros: useful so you do not skimp on protein or skew everything toward fat.
• Neither replaces sleep quality, training, digestive health, or medical judgment.

Protein is made of amino acids. Your body uses it for muscle, skin, enzymes, hormones, and immune function. When you are in a calorie deficit, eating enough protein per kg of body weight helps preserve muscle while you lose fat.

Here we set protein in grams per kilogram by goal. That total is subtracted from your calorie budget, and what remains is split between carbs and fat.

Goal-based reference (this calculator)

Common sources: chicken, fish, eggs, dairy, legumes, tofu, lean meat. Spreading intake across several meals is usually easier than trying to fit it all into dinner.

Carbohydrates break down into glucose, the fuel your body prefers for training and keeping your brain running well. They are not the enemy by default — context matters (activity level, metabolic health, personal preferences).

In this tool, carbs get most of the calories left after protein is set. That usually lands around 45-55% of total calories depending on your weight and goal.

Fiber and sugar

• Fiber (vegetables, legumes, whole grains) counts within carbohydrates and helps with satiety and gut health.
• Added sugar also counts as carbohydrate; it is worth not basing your diet on it.
• If you do endurance or intense strength training, carbs around your workout can improve performance and recovery.

Fat provides more than twice the kcal per gram than protein or carbs (9 vs 4). That does not make it bad: it is energy-dense and needed to absorb fat-soluble vitamins (A, D, E, K) and produce hormones.

After protein and carbs are set, remaining calories go to fat — often around 25-35% of the total. Olive oil, avocado, nuts, oily fish, and eggs provide quality fats in reasonable portions.

Cutting fat too low can hurt satiety and hormone levels. Pushing it very high without watching total kcal can stall a deficit. The balance depends on your overall calorie target.

To convert grams to kilocalories, food labels use this basic rule:

Example: 150 g protein × 4 = 600 kcal; 200 g carbs × 4 = 800 kcal; 65 g fat × 9 = 585 kcal. The sum should be close to your daily target (small rounding when using whole grams is normal).

1. 1

   BMR with Mifflin-St Jeor. From weight, height, age, and sex we estimate basal metabolic rate.

2. 2

   TDEE. We multiply BMR by your activity level to get daily expenditure.

3. 3

   Calorie target. By goal (maintain, deficit, or surplus) we adjust kcal, same as the daily calorie calculator.

4. 4

   Protein in grams. Weight (kg) × g/kg by goal (1.8 / 2.2 / 2.0).

5. 5

   Carbs and fat. From remaining calories, approximately 62.5% goes to carbs and 37.5% to fat, aiming for about 50% and 30% of the daily total respectively.

Everything runs in your browser; we do not send your data to any server. To focus only on expenditure, try the TDEE calculator.

The calorie goal leads; macros organize how you split that energy. If you change one macro without adjusting total kcal, another shifts to compensate — so it helps to look at the whole picture.

Daily grams sound abstract until you map them to real meals. Very general references — not prescribed menus:

Breakfast style

• Eggs or Greek yogurt (protein) + fruit or oats (carbs) + a handful of nuts (fat).
• Whole grain toast with avocado (fat + carbs) and turkey slices or hummus (protein).

Lunch or dinner style

• Chicken, fish, or tofu + rice, potato, or legumes + salad with olive oil.
• Bowl with quinoa, roasted vegetables, chickpeas, and seeds.

Each meal does not need perfect ratios. Most people aim for the full day to balance out. If one meal is carb-heavy, another can lean more on protein or healthy fat.

1. 1

   Save your target. Write down protein, carbs, fat, and total kcal as your weekly reference.

2. 2

   Log without obsessing. A few honest logging days teach more than months of guessing. QuéComí on WhatsApp lowers the friction: send what you ate and see macros instantly.

3. 3

   Adjust based on real signals. Energy, hunger, gym performance, and weight trend matter more than one perfect day in the app.

For day-to-day support, check QuéComí plans or create your account. The calculator orients; habit confirms.

• Ignoring protein and eating just fewer calories until you have no room left for muscle or satiety.
• Double-counting activity: high factor in the calculator plus everything from your wearable.
• Chasing exact grams every day and quitting after a weekend slip.
• Forgetting oils, sauces, and drinks: they add fat or carbs you do not always see on the plate.
• Not recalculating after losing several kilos: expenditure and protein grams change with weight.
• Copying someone else's macros without adjusting for your size, goal, and training.

The goal is reasonable consistency, not perfection. If something does not fit after several weeks, change one variable (kcal, protein, or activity) and observe the result.