What are the best macros for fat loss?

For fat loss, prioritize protein at 1.6-2.2g per kg bodyweight to preserve muscle. A common split is 30-35% protein, 35-40% carbs, and 25-30% fat, adjusted based on preference and activity.

Do macros matter more than calories for weight loss?

Calories determine weight loss, but macros affect body composition. Higher protein preserves muscle during a deficit. Carbs and fats can be adjusted based on training needs and personal preference.

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Macro Calculator

Calculate your optimal macronutrient distribution based on your goals and activity level.

Weight (kg)

Goal

Daily Calories

Understanding Macronutrients

What Are Macros?

Macronutrients are the three primary nutrients that provide energy (calories) to your body: protein, carbohydrates, and fat. Each macronutrient serves unique functions in your body and provides a different amount of energy per gram. Protein provides 4 calories per gram, carbohydrates provide 4 calories per gram, and fat provides 9 calories per gram. While total calorie intake determines whether you gain or lose weight, your macronutrient ratio determines how much of that change comes from muscle versus fat, and how you feel and perform during the process.

Protein: The Foundation

Protein is the most important macronutrient for body composition. It provides the amino acids necessary for muscle repair and growth, supports immune function, and produces enzymes and hormones. Protein also has the highest thermic effect of food (20–30%), meaning your body burns more calories digesting protein than carbs or fat. For most active individuals, consuming 1.6–2.2 grams of protein per kilogram of body weight per day is optimal. During a calorie deficit, protein needs increase to help preserve lean muscle mass.

Carbohydrates: Your Performance Fuel

Carbohydrates are your body's preferred energy source for high-intensity exercise. They are stored in muscles and the liver as glycogen and are essential for fueling weight training, sprinting, and other intense activities. Cutting carbs too low can impair workout performance, reduce recovery speed, and negatively affect mood and sleep quality. Good sources include rice, oats, potatoes, fruits, vegetables, and whole grains. Carb intake should be adjusted based on training volume and intensity.

Dietary Fat: Essential for Health

Dietary fat is crucial for hormone production (including testosterone and estrogen), brain function, vitamin absorption (A, D, E, K), and cell membrane integrity. Never drop fat intake below 0.5 grams per kilogram of body weight, as this can disrupt hormonal balance. Healthy fat sources include avocados, olive oil, nuts, fatty fish (salmon, sardines), and egg yolks. Most people thrive with fat intake between 0.6–1.0 grams per kilogram of body weight.

Setting Up Your Macros

The general approach is to set protein first (based on body weight), set fat second (minimum 0.5g/kg, ideally 0.6–1.0g/kg), and then fill the remaining calories with carbohydrates. This calculator automates this process based on your goal. Remember that these are starting points — adjust based on your energy levels, training performance, hunger levels, and progress over time. Consistency matters more than perfection.