Macronutrient (Macro) Split Calculator
Calculate daily protein, carbohydrate, and fat gram targets tailored to your fitness goals.
Daily Target Calories
2,336 kcal
TDEE: 2,336 kcal | BMR: 1,699 kcal
Protein
175g
700 kcal
2.3 g/kg bw
Carbs
234g
936 kcal
3.1 g/kg bw
Fat
78g
702 kcal
1.0 g/kg bw
Macro Split: 30% Protein / 40% Carbs / 30% Fat
What is Macronutrient (Macro) Split Calculator?
Macronutrients—protein, carbohydrates, and dietary fats—provide the energy and structural building blocks your body needs to fuel daily activity, preserve muscle tissue, and achieve specific body composition goals. Our Macro Calculator determines your daily calorie target and translates it into precise gram and percentage distributions across flexible dietary splits in browser memory.
Designed for accuracy, speed, and privacy, this tool runs entirely on your local device with zero network latency.
How to Use the Macronutrient (Macro) Split Calculator
- 1Enter your Biological Sex, Age, Height, Current Weight, and physical Activity Level.
- 2Select your Primary Fitness Goal: "Weight Loss (Deficit)", "Maintenance", "Muscle Building (Surplus)", or "Keto / Low-Carb".
- 3Review your customized daily calorie budget and calculated gram targets for Protein, Carbohydrates, and Dietary Fats.
- 4Apply your personalized macro breakdown to popular food logging apps or meal prep plans to optimize your nutrition.
Formula & Calculation Logic
Applies standard Atwater specific energy factors and Acceptable Macronutrient Distribution Ranges (AMDR) defined by the National Academies Institute of Medicine.
Energy Yields: Protein = 4 kcal/g | Carbohydrates = 4 kcal/g | Dietary Fats = 9 kcal/g | Total Calories = (P*4) + (C*4) + (F*9)Macronutrient (Macro) Split Calculator Frequently Asked Questions
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