Macro Calculator
This calculator provides estimates for educational purposes only and is not medical advice. Results may vary based on individual factors. Consult a healthcare provider before making changes to your diet or exercise routine.
What are macros?
Macronutrients — protein, carbohydrates, and fat — are the three nutrients your body needs in large amounts. Each plays a different role: protein builds and repairs muscle, carbs provide energy, and fat supports hormones and nutrient absorption.
Tracking macros goes beyond calorie counting by ensuring you get the right balance of nutrients for your specific goal — whether that's losing fat while keeping muscle, maintaining your current physique, or building mass.
The CalorieJoy method
Most macro calculators use fixed percentage splits, but a 60 kg woman and a 120 kg man on the same "40/30/30" get very different protein-per-kg ratios. Our CalorieJoy split scales to your body:
- Fat: 1g per kg of bodyweight — enough for hormones and nutrient absorption, nothing wasted
- Protein: scaled by activity — 1.6g/kg (sedentary) up to 2.2g/kg (super active)
- Carbs: whatever calories remain — your flexible energy source
How this calculator works
We calculate your Total Daily Energy Expenditure (TDEE) using the Harris-Benedict equation, then adjust for your goal: -500 calories for weight loss, no change for maintenance, or +300 calories for muscle gain. The adjusted calories are then split into protein, carbs, and fat based on your chosen macro ratio.
Already tracking calories? Our Daily Calorie Intake Calculator pairs well with this tool. And if you're new to calorie awareness, start with understanding calorie deficit.