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Macro Calculator

Calculate your optimal macronutrient breakdown (protein, carbohydrates, and fats) based on your fitness goals and activity level.

Enter Your Information

How to Use the Macro Calculator

Step-by-Step Instructions

  1. Select your preferred unit system (Metric or Imperial)
  2. Enter your age (15-80 years)
  3. Choose your biological gender
  4. Input your current weight within valid range
  5. Enter your height measurement
  6. Select your weekly activity level
  7. Choose your primary fitness goal
  8. Click "Calculate Macros" for your personalized breakdown

Tips for Best Results

  • Use your current weight, not target weight
  • Be realistic about your activity level
  • Consider your job's physical demands
  • Choose goals that match your current priorities
  • Start with moderate deficit/surplus goals
  • Adjust based on 2-3 weeks of real results

Understanding Macronutrients

Macronutrients are the three main nutrients your body needs in large amounts: protein, carbohydrates, and fats. Each serves specific functions and provides energy (calories) to fuel your body and support your fitness goals.

Protein (4 calories per gram)

  • Essential for muscle building, repair, and maintenance
  • Highest thermic effect - burns more calories during digestion
  • Provides satiety and helps preserve muscle during weight loss
  • Recommended: 1.6-2.2g per kg body weight for active individuals

Carbohydrates (4 calories per gram)

  • Primary energy source for high-intensity exercise
  • Fuels brain function and central nervous system
  • Helps with recovery and muscle protein synthesis
  • Adjust based on activity level and training intensity

Fats (9 calories per gram)

  • Essential for hormone production and nutrient absorption
  • Provides sustained energy for low-intensity activities
  • Supports cell membrane function and brain health
  • Minimum 20-25% of total calories for optimal health

Frequently Asked Questions

What are macronutrients?

Macronutrients are the three main nutrients your body needs in large amounts: protein (for muscle building and repair), carbohydrates (for energy), and fats (for hormone production and nutrient absorption). Each provides calories and serves specific functions.

How much protein do I need?

Protein needs vary by goal: 1.6-2.2g per kg body weight for muscle building, 2.0-2.5g per kg for fat loss, and 1.4-1.8g per kg for maintenance. Active individuals need more than sedentary people.

Should I track macros or just calories?

While calories determine weight change, macros affect body composition, performance, and satiety. Tracking macros helps ensure adequate protein for muscle preservation, optimal carbs for performance, and sufficient fats for health.

Can I adjust my macro ratios?

Yes, macro ratios can be adjusted based on preferences, performance, and results. Maintain adequate protein, then adjust carbs and fats based on your energy needs, exercise type, and personal preferences.

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