MACRO
CALCULATOR

Get your personalized protein, carbs, and fat split for your specific goal.

✅ Goal-Specific Splits🥩 Protein-First Approach🎯 Cutting, Bulking, Recomp
Your Details
Your Macros
🥩 Protein--
🍳 Carbohydrates--
🧄 Fat--
Macro Split
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Get your exact bodyweight-specific daily protein target:
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Macro Split Reference
GoalProteinCarbsFatNotes
Fat Loss35%35%30%High protein preserves muscle
Maintenance25%45%30%Balanced approach
Muscle Gain25%50%25%Extra carbs fuel training
Keto25%5%70%Fat-fuelled metabolic state
Endurance15%60%25%Carbs for performance
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What This Calculator Does

The Macro Calculator calculates your daily protein, carbohydrate, and fat targets based on your calorie goal, body weight, and fitness objective. It uses the highest-evidence macro ratios for fat loss, maintenance, and muscle gain.

The Formula Explained

Protein first: 1.6–2.4g per kg body weight (×4 = protein calories). Fat minimum: 0.8–1.0g per kg (×9 = fat calories). Remaining calories → carbohydrates (÷4 = grams). Example: 2,300 kcal, 75kg male, fat loss → 165g protein (660 kcal) · 75g fat (675 kcal) · 241g carbs (965 kcal).

What Your Result Means

For fat loss: 35% protein / 35% carbs / 30% fat maximises muscle preservation. For muscle gain: 25% protein / 50% carbs / 25% fat fuels training. Protein is the most important macro — high intake reduces hunger, preserves lean mass, and has the highest thermic effect (20–30% of calories burned in digestion).

Next Steps

Protein Calculator for bodyweight-specific target · Calorie Calculator if you need your calorie budget first

What Are Macronutrients?

Protein, carbohydrates, and fat are the three macronutrients that provide calories. Protein and carbs each provide 4 calories per gram; fat provides 9 calories per gram. Tracking macros goes beyond calorie counting to optimize body composition, performance, and satiety. The right macro split depends entirely on your goal.

Protein-First Approach

Set protein first (1.6–2.4g/kg), then fat (minimum 0.7–1g/kg for hormonal health), then fill remaining calories with carbohydrates. This approach prioritizes muscle preservation and satiety regardless of goal. Use our Protein Calculator for a more detailed breakdown.

SM
Medically Reviewed by Dr. Sarah Mitchell, M.D.
Board-Certified Internal Medicine · 12 Years Clinical Experience
Dr. Mitchell reviews all IndexBody health content for clinical accuracy and alignment with WHO, CDC, and NIH guidelines.

Frequently Asked Questions

What is the best macro split for weight loss?
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Higher protein (35% of calories) with moderate fat (30%) and carbohydrates (35%) is well-supported for fat loss. Adequate protein preserves muscle during a deficit. Total calorie intake matters more than the exact macro ratio for fat loss outcomes.
How do I track macros?
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Use a food tracking app like MyFitnessPal or Cronometer to log meals. Weigh food on a kitchen scale for accuracy. Focus on hitting your protein target first, then fat, then fill remaining calories with carbohydrates.