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Macro split Calculator

Calculate daily targets for Protein, Carbs, and Fats.

Daily Calorie Target2000 Kcal
Grams Breakdown
Protein Target150g
Protein (30%)
150g (600 kcal)
Carbohydrates (40%)
200g (800 kcal)
Fats (30%)
67g (600 kcal)

The Science of Macronutrient Ratios

While hitting your daily calorie target determines weight changes, the **macronutrient ratio (macro split)** dictates the composition of that weight shift (e.g. losing adipose fat tissue vs. conserving or synthesizing skeletal muscle tissue).

Understanding Each Macro:

  • Protein (4 kcal/g): Essential for skeletal repair, immune cells, and muscle protein synthesis. High-protein diets prevent lean tissue depletion in a deficit and improve satiety.
  • Carbohydrates (4 kcal/g): The preferred metabolic substrate for high-intensity muscular work and cognitive processes. Muscle glycogen reserves are crucial for peak athletic strength.
  • Fats (9 kcal/g): Essential for lipid hormone production, cognitive health, fat-soluble vitamin absorption, and structural cellular membrane integrity.

Which split should you choose? For hypertrophy or fat loss splits, maintaining high-protein bounds (35-40%) is often advised to prevent catabolic tissue breakdown. For cardiovascular athletes, a balanced (30/40/30) ratio supports rich glycogen storage. For those looking to control insulin curves, a ketogenic low-carb setup helps trigger fat-to-ketone conversion.