Macro Calculator
Calculate your daily protein, carb, and fat targets based on goals and body stats
What This Calculator Does
The Macro Calculator determines your daily protein, carbohydrate, and fat targets based on your body weight, fitness goals, and activity level. Proper macronutrient balance is crucial for body composition goals. This calculator provides a balanced starting point that you can adjust based on your individual response and preferences.
The Formula
Example Calculations
Example: Muscle gain at 170 lbs
A 170 lb person with a TDEE of 2,500 calories wanting to build muscle. Target calories: 2,800 (TDEE + 300). Protein: 136g (170 x 0.8). Fat: 78g (2,800 x 0.25 / 9). Carbs: 331g (remaining calories / 4).
Example: Weight loss at 200 lbs
A 200 lb person with a TDEE of 2,800 calories wanting to lose weight. Target calories: 2,300 (TDEE - 500). Protein: 160g (200 x 0.8). Fat: 64g (2,300 x 0.25 / 9). Carbs: 233g (remaining calories / 4).
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How to Use Your Results
Use these macro targets as a starting point. Track your food intake for one to two weeks and monitor your weight and energy levels. If you are not seeing results, adjust carbs and fats first while keeping protein consistent. Protein is the most important macro for body composition regardless of your goal. Distribute protein evenly across 3 to 5 meals for optimal absorption.
Frequently Asked Questions
How accurate is the Macro Calculator?
The Macro Calculator uses well-established scientific formulas to provide reliable estimates. Macro targets are personalized starting points based on established sports nutrition guidelines. Individual needs vary based on metabolism and body composition. For precise measurements, consult a healthcare professional or certified personal trainer.
Is the Macro Calculator free to use?
Yes, the Fitnit Macro Calculator is completely free with no sign-up required. Enter your values and get instant results. You can use it as many times as you like.
What formula does the Macro Calculator use?
The calculator uses your estimated TDEE adjusted for your goal (deficit for weight loss, surplus for muscle gain), then splits calories into macros using evidence-based ratios: 0.8g protein per pound of body weight, 25 percent of calories from fat, and remaining calories from carbohydrates.
How often should I recalculate my daily macro targets in grams?
We recommend recalculating every 4 to 6 weeks, or whenever your weight, activity level, or fitness goals change significantly. Regular updates ensure your targets stay aligned with your current body and lifestyle.
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