Macros Calculator
Calculate optimal carbs, protein, and fat ratios in grams for your calorie goal and fitness objective (cut, maintain, or bulk). Ready for meal planning.
P 30% / C 45% / F 25%
Protein
150g
600 kcal
Carbs
225g
900 kcal
Fat
56g
504 kcal
(Minimum 1.6g/kg body weight applied)
Macro Distribution
Per Meal (Γ3/day)
Per Snack (Γ2/day)
Protein Sources
Carb Sources
Healthy Fat Sources
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Frequently Asked Questions
Q. How many calories are in 1 gram of each macronutrient?
Carbohydrates: 4 kcal/g, protein: 4 kcal/g, fat: 9 kcal/g. Understanding this lets you accurately read nutrition labels and calculate your daily calorie intake from any meal.
Q. What macro ratio is best for fat loss?
A ratio of approximately 40% carbs, 35% protein, and 25% fat is commonly recommended for fat loss. High protein minimizes muscle loss during a calorie deficit.
Q. How much protein do I need per day?
Research recommends 1.6β2.2 g of protein per kg of body weight for individuals doing resistance training. Higher protein intakes preserve muscle mass during calorie restriction.
Q. Is the keto diet effective for fat loss?
Keto (5β10% carbs, 70β75% fat, 20β25% protein) produces rapid early fat loss due to water weight loss and ketosis. However, long-term compliance is difficult and it offers no metabolic advantage over other diets at equal calories.
Q. Do macros matter as long as total calories are right?
Total calories determine whether you gain or lose weight. Macros determine body composition β adequate protein preserves muscle. Both matter, but calories take priority for basic weight management.
Q. What macro tracking apps work well with this calculator?
MyFitnessPal, Cronometer, and Carbon Diet Coach integrate well. Input the macro targets from this calculator into those apps to track daily intake against your goals.
How to Use
Input your target daily calories from the TDEE calculator.
Choose fat loss, maintenance, or muscle gain to get goal-optimized macro ratios.
Input your current weight (kg) so the calculator can determine minimum protein requirements.
View per-meal macro targets across 3 meals + 2 snacks and the macro pie chart.
Expert Knowledge: Macros Calculator
Each macronutrient delivers specific calories: carbohydrates 4 kcal/g, protein 4 kcal/g, fat 9 kcal/g. Research consistently shows diet accounts for ~80% of body composition results β "you can't out-train a bad diet." Tracking macros via apps like MyFitnessPal alongside this calculator maximizes precision.
Goal-specific macro ratios: Fat loss β 40% carbs / 35% protein / 25% fat (high protein preserves muscle in a deficit). Muscle gain β 50% carbs / 25% protein / 25% fat (carbs fuel training performance). Keto β 5β10% carbs / 70β75% fat / 20β25% protein (rapid early loss from water, but long-term compliance is low). Regardless of ratio, total calorie management is the primary lever.
Protein is the most critical macro to get right. Research supports 1.6β2.2 g/kg of body weight for resistance-training individuals. At adequate protein intakes, muscle retention during calorie deficits is dramatically improved. Prioritize hitting protein targets first, then distribute remaining calories between carbs and fat based on preference and activity type.
Related Tools
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