Macro Calculator

Calculate your optimal daily macronutrient intake based on your personal metrics and fitness goals.

This tool helps you determine the right balance of protein, carbohydrates, and fats to support your fitness objectives, whether you're looking to lose weight, maintain your current physique, or build muscle. Using the Mifflin-St Jeor or Katch-McArdle formulas, it provides personalized recommendations tailored to your needs.

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Macro Calculator

Please enter an age between 15 and 120.
Imperial (lb, ft/in) Metric (kg, cm)
Please select feet.
Please select inches.
Please enter a height between 100 and 250 cm.
Please enter a weight between 66 and 660 lb.
Please enter a weight between 30 and 300 kg.
Please select an activity level.
Please select a goal.
Required for Katch-McArdle formula
Please enter a body fat percentage between 5% and 60%.

How It Works

The Macro Calculator uses your age, gender, height, weight, activity level, and fitness goals to estimate your Total Daily Energy Expenditure (TDEE) using the Mifflin-St Jeor or Katch-McArdle formula (if body fat percentage is provided). It then distributes your calorie needs across macronutrients based on your selected plan:

  • Balanced: 30% protein, 40% carbs, 30% fat
  • Reduced Fat: 30% protein, 50% carbs, 20% fat
  • Low Carb: 35% protein, 25% carbs, 40% fat
  • High Protein: 40% protein, 30% carbs, 30% fat
  • Custom: Adjustable percentages with sliders

Consult a nutritionist or healthcare professional before making significant dietary changes.

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