What Are Macronutrients & How Do You Count Macros?

If you’ve ever asked yourself, “how do you count macros?” you’re not alone. Macro tracking has become one of the most popular nutrition strategies in fitness, weight loss, and muscle-building communities. But before you dive in, let’s break down what macros actually are and how to count them in a way that supports your goals.

What Are Macronutrients?

Macronutrients — or “macros” for short — are the three main categories of nutrients that your body needs in large amounts for energy, growth, and overall function:

  1. Protein
    Proteins are the building blocks of muscle, skin, enzymes, and hormones. They help with tissue repair, immune support, and maintaining lean body mass.
    • Examples: Chicken, fish, eggs, tofu, legumes, protein powders.
    • Calories per gram: 4
  2. Carbohydrates
    Carbs are your body’s preferred energy source. They fuel your workouts, your brain, and daily activity. Not all carbs are created equal—focus on complex carbs like whole grains, vegetables, and fruits.
    • Examples: Rice, oats, fruit, sweet potatoes, quinoa.
    • Calories per gram: 4
  3. Fats
    Fats support brain health, hormone production, and absorption of fat-soluble vitamins (A, D, E, K). Healthy fats are essential — don’t fear them!
    • Examples: Avocados, nuts, seeds, olive oil, fatty fish.
    • Calories per gram: 9
Infographic explaining macronutrients: protein, carbohydrates, and fats. Protein sources include chicken, fish, eggs, tofu, legumes, and protein powder (4 calories per gram). Carbohydrates include rice, oats, fruit, sweet potatoes, and quinoa (4 calories per gram). Fats include avocados, nuts, seeds, olive oil, and fatty fish (9 calories per gram).
What are macros and why should you care? Macros = protein, carbs, and fats – the nutrients your body needs in large amounts for energy, muscle, and health.

Why Count Macros?

Unlike simple calorie counting, tracking your macros ensures that you’re not just hitting an energy target, but also fueling your body with the right balance of nutrients. This can help:

  • Preserve muscle while losing fat
  • Improve workout performance
  • Manage hunger more effectively
  • Promote overall metabolic health

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How to Count Macros

Counting macros can feel overwhelming at first, but it becomes second nature with practice. Here’s how to get started:

1. Calculate Your Calorie Needs

Start by figuring out how many calories your body needs in a day. This is based on your age, weight, height, activity level, and goals (weight loss, maintenance, or muscle gain). You can use online calculators or work with a nutritionist for a more personalized estimate.

2. Set Your Macro Ratios

Once you know your daily calorie target, you’ll divide that total into macros. Common macro ratios vary depending on your goal, but here are a few examples:

GoalProteinCarbsFat
Fat loss40%30%30%
Muscle building30%45%25%
Maintenance30%40%30%

Let’s say your calorie goal is 2,000 calories and you’re aiming for 30% protein, 40% carbs, and 30% fat:

  • Protein: 30% of 2000 = 600 ÷ 4 = 150g
  • Carbs: 40% of 2000 = 800 ÷ 4 = 200g
  • Fat: 30% of 2000 = 600 ÷ 9 = ~67g

3. Track Your Food Intake

Use a food scale and a macro-tracking app like MyFitnessPal, Cronometer, or Macrostax to log your food and monitor your macros throughout the day. With time, you’ll get a feel for portion sizes and macro content.

4. Stay Flexible

Macro tracking doesn’t mean eating the same meals every day. It’s a flexible approach that allows you to mix and match foods to fit your targets. It’s not about perfection—it’s about consistency and learning what fuels your body best.

Fuel Your Macros with Ease: RxFit Meal Prep Service

Counting macros takes planning, but meal prep doesn’t have to be stressful. That’s where we come in.

At RxFit, we now offer a customized Meal Prep Service designed to support your macro goals without the hassle of shopping, cooking, or measuring. Each meal is created by our in-house Functional Nutritionist to:

  • Match your personal macro targets
  • Use fresh, whole, anti-inflammatory ingredients
  • Take the guesswork out of portion sizes
  • Save you time while keeping you consistent

Whether your goal is fat loss, muscle gain, or balanced maintenance, our meals are built to fuel your progress and keep you on track.

If you are interested,book a free consultation call with our in house functional nutritionist, Nini.


Want personalized advice on macro coaching from our in-house Functional Nutritionist? If you are interested in learning more about 1:1 coaching program, book a complimentary call

Book a call with Nini

or send email to nini@rxfitatx.com

About the Author

Picture of Nini Maine

Nini Maine

Nini is RxFit’s in-house nutritionist, blending her expertise as a certified Macro Coach and Holistic Nutritionist to help clients build sustainable, energizing habits. She leads RxFit’s Functional Nutrition and Meal Prep Program and and authors the monthly Nini’s Corner series. Her approach focuses on real-life balance, functional nutrition, and supporting busy professionals with practical solutions.