Macro Calculator

Calculate Your Ideal Protein, Carbs & Fat

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Your Daily Macros

--
Protein (g)
-- cal
--
Carbs (g)
-- cal
--
Fat (g)
-- cal

Macro Breakdown

■ Protein: 30% ■ Carbs: 40% ■ Fat: 30%

Per Meal (3 meals/day)

  • Protein per meal -- g
  • Carbs per meal -- g
  • Fat per meal -- g

What Are Macros?

Macronutrients (or "macros") are the three main nutrients that provide energy (calories) in your diet:

  • Protein (4 calories per gram): Essential for muscle building, repair, and maintaining lean body mass. Found in meat, fish, eggs, dairy, legumes, and tofu.
  • Carbohydrates (4 calories per gram): Your body's preferred energy source, especially for brain function and exercise. Found in grains, fruits, vegetables, and sugars.
  • Fat (9 calories per gram): Essential for hormone production, vitamin absorption, and cell health. Found in oils, nuts, avocados, and fatty fish.

Macro Ratios by Goal

Weight Loss: Higher protein (35-40%) helps preserve muscle and keeps you full. Moderate carbs (25-35%) and fat (25-35%) provide balanced energy.

Maintenance: A balanced approach with 25-30% protein, 40-50% carbs, and 25-30% fat works well for most people.

Muscle Gain: Adequate protein (30-35%) supports muscle growth. Higher carbs (40-50%) fuel intense workouts. Moderate fat (20-25%) supports hormones.

Diet Type Explanations

  • Balanced: Traditional macro split suitable for most people (30/40/30)
  • Low Carb: Reduced carbohydrates for those who feel better with fewer carbs (35/25/40)
  • High Protein: Maximum protein for muscle building or preservation (40/30/30)
  • Keto: Very low carb, high fat for ketosis (25/5/70)

Tips for Hitting Your Macros

  • Plan protein first - it's usually the hardest macro to hit
  • Use a food tracking app for accuracy
  • Prep meals in advance to stay on track
  • Don't stress about hitting exact numbers - within 5-10g is fine
  • Adjust based on energy levels and progress over 2-4 weeks

Frequently Asked Questions

What are macros and why do they matter?

Macros (macronutrients) are the three main nutrients that provide calories: protein (4 cal/g), carbohydrates (4 cal/g), and fat (9 cal/g). They matter because the ratio affects body composition, energy levels, and how full you feel. Proper macro balance helps you lose fat while preserving muscle, or build muscle while minimizing fat gain.

How much protein do I need per day?

For most active adults, 1.6-2.2 grams of protein per kg of body weight is optimal. If you're trying to lose weight while preserving muscle, aim for the higher end (2.0-2.2g/kg). For maintenance or light activity, 1.2-1.6g/kg is usually sufficient.

What is the best macro ratio for weight loss?

For weight loss, a higher protein ratio (30-40% of calories) helps preserve muscle and keeps you feeling full. A common effective split is 40% protein, 30% carbs, 30% fat. However, the total calorie deficit matters more than the exact ratio - find what's sustainable for you.

Should I track macros or just calories?

Tracking macros provides more precision than calories alone. While calorie balance determines weight change, macro balance affects body composition. Tracking macros ensures adequate protein for muscle, sufficient fat for hormones, and appropriate carbs for energy. Start with calorie tracking, then add macro tracking for better results.

Medical Disclaimer: This calculator provides general estimates for informational purposes only. Individual needs vary based on health conditions, activity level, and goals. Consult a registered dietitian or healthcare provider for personalized nutrition advice, especially if you have diabetes, kidney disease, or other health conditions.

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