Macronutrients are nutrients your body needs in larger amounts: protein, carbohydrates, and fats. They provide calories (energy).

• Protein: 4 calories per gram. Essential for building and repairing tissues, enzymes, hormones.
• Carbohydrates: 4 calories per gram. Main source of energy for the body.
• Fats: 9 calories per gram. Important for energy, hormone production, nutrient absorption, and cell health.

Different diets emphasize different macronutrient ratios. This calculator provides estimates based on common approaches:

General Diet Ratio Examples (Approximate % of Calories):

Diet Type	Protein (%)	Carbs (%)	Fats (%)
Balanced	20-30	40-50	25-35
Ketogenic (Keto)	20-25	5-10	70-75
Paleo	25-35	20-30	40-50
Low Carb	25-35	15-25	50-60
High Protein	30-40	30-40	25-35

This calculator uses specific percentages within these typical ranges for calculation (e.g., Balanced might use P:25%, C:45%, F:30%).

Disclaimer: These are general estimates. Individual needs vary based on age, sex, activity level, health goals, and medical conditions. Consult a healthcare professional or registered dietitian for personalized nutrition advice.