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Free Online Tool

Macro Calculator

Get your daily protein, carb, and fat targets.
Optimized for your goal and body weight.

Personalized Macros

Guide

Understanding Your Macros

Each macronutrient plays a distinct role in body composition and performance.

4 kcal/g

Protein

Builds and repairs muscle, supports immune function, preserves lean mass during fat loss. Essential for every cell in the body.

4 kcal/g

Carbohydrates

Primary fuel source for the brain and muscles. Supports high-intensity exercise performance. Stored as glycogen in muscles and liver.

9 kcal/g

Fat

Supports hormone production (including testosterone and estrogen), fat-soluble vitamin absorption (A, D, E, K), and provides essential fatty acids.

Common Questions

Macro FAQ

What are macros?
Macros (macronutrients) are the three main nutrients your body needs in large amounts: protein (4 kcal/g), carbohydrates (4 kcal/g), and fat (9 kcal/g). Tracking macros optimizes body composition and performance.
What macro ratio is best for fat loss?
For fat loss: 30–40% protein, 30–40% carbs, 20–30% fat. High protein preserves muscle during a calorie deficit. Some people prefer lower carbs (20–30%) for better satiety.
What macro ratio is best for muscle gain?
For muscle gain: 25–30% protein, 45–55% carbs, 20–25% fat. Adequate carbs fuel workouts and replenish glycogen. Total calories should be at TDEE +250–500 kcal.
Should I track net carbs or total carbs?
For general health, track total carbs. For keto diets, track net carbs (total carbs minus fiber). Fiber doesn't raise blood sugar, so keto dieters subtract it from total carbs.
How do I track my macros?
Use a food tracking app (MyFitnessPal, Cronometer). Weigh food with a kitchen scale for accuracy — volume estimates can be off by 30–50%. Track consistently for 2–3 weeks to understand your patterns.

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