Macro Nutrient Calculator (IIFYM)
Calculate your daily protein, fat, and carbohydrate targets based on your calorie goal and preferred macro split.
Understanding Macros and IIFYM
IIFYM stands for "If It Fits Your Macros". It's a dietary approach that focuses on tracking the three major macronutrients—protein, fat, and carbohydrates—rather than rigidly restricting specific food types.
The Mathematics of Macros
Every gram of a macronutrient contains a specific number of calories:
- Protein: 4 calories per gram
- Carbohydrates: 4 calories per gram
- Fat: 9 calories per gram
Worked Example
- Target Calories: 2,000
- Split: 30% Protein / 30% Fat / 40% Carbs
- Protein: 600 calories / 4 = 150g
- Fat: 600 calories / 9 = 67g
- Carbs: 800 calories / 4 = 200g
Frequently Asked Questions
What is a good macro split for muscle gain?
A common split for building muscle and strength training is 30% Protein, 25% Fat, and 45% Carbs. Ensuring adequate protein is the most important factor. These are estimates and may not reflect actual values. Always verify important calculations independently.
Disclaimer: This calculator is for educational and informational purposes only. It is not a medical diagnosis or professional medical advice. The results provided should not be relied upon as a substitute for professional medical evaluation. Individual health needs vary greatly based on age, medical history, lifestyle, and other factors. Consult a qualified healthcare provider, doctor, or registered dietitian before making any health or medical decisions. If you are experiencing health concerns, seek immediate medical attention.