Free Macro Calculator

Used by millions, our free macro calculator gives you accurate daily calorie and macro targets in seconds. Enter your details, choose a goal, and you’ll see exactly how much protein, carbs, and fat to eat each day. It runs on the same evidence-based formula our coaches use with clients every day, so your numbers are a reliable starting point rather than a rough guess.

Whether you want to lose fat, build muscle, or maintain your weight, the calculator tailors your macros to your body and activity level. Scroll down to learn how to use your results, what each macro does, and how to track them day to day.

Macro Calculator
Choose Imperial if you use inches & lbs (mostly U.S.A.), or Metric if you use kilos & cm.
This has no bearing on your weight loss and is all about what you prefer to eat.
Are you currently performing, or planning on performing, resistance training as a part of your workout program? This can be any training involving weights or bodyweight.
When selecting your activity level please choose Sedentary unless you have a job that involves manual labour.
We recommend most people choose a moderate deficit, a painful deficit requires perfect tracking.

Input Your Details

We'll email you your macros along with some useful advice on getting started with your journey.

How to Use Your Macro Calculator Results

Your macro calculator results are only as accurate as the details you enter. Follow these quick steps to get a precise starting point, then put your numbers to work.

  1. Pick your goal: fat loss, maintenance, or muscle building. This sets whether the calculator builds a calorie deficit, holds you at maintenance, or adds a surplus.
  2. Select your sex and confirm whether you lift weights. If you do resistance training, the calculator raises your protein target to help you build and protect muscle.
  3. Use accurate stats for weight, height, and age. A recent weigh-in matters, because old or rounded numbers throw your whole target off before you even start.
  4. Set your activity level honestly. Most people are actually sedentary even if they’re on their feet all day. The active option suits those with highly physical jobs such as construction or manual labor.
  5. For fat loss, choose a calorie deficit you can sustain. Start with a moderate option if you’re unsure, then follow your numbers for two to three weeks and adjust based on your weight trend.

When you finish, your personalized macros display instantly and can be emailed to you with simple tips to get started. These numbers are a strong starting point, but everyone responds differently, so a coach can fine-tune them around how your body actually changes. See how our coaching works, or track your macros with Macro Sync to stay on target each day.

Our Impact So Far

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People have used our Macro Calculator to learn how to fuel their goals.
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What Are Macros?

Macros, short for macronutrients, are the three nutrients your body needs in large amounts to function and stay healthy: protein, carbohydrates, and fats. Every food you eat contains a mix of these, and each one has a unique job in keeping you fueled, strong, and healthy. Counting macros simply means tracking how much of each you eat in a day.

When you used the macro calculator above, it split your daily calorie target across these three macros based on your goal. Understanding what each one does makes it far easier to make good food choices and act on your results.

Fat

Fat has had a bad reputation over the years, but it’s vital for your health. Many of your body’s major hormones are built on a fat backbone, and every cell membrane depends on it. Healthy fats also help absorb vitamins and keep you satisfied between meals.

That said, fat is calorie-dense — roughly 9 calories per gram — so portion control matters even when you’re choosing healthy sources like avocado, olive oil, nuts, and salmon.

Carbohydrates

Carbohydrates are your body’s primary energy source, especially during exercise. The more intense your training, the more important carbs become. They power your workouts and help with recovery afterwards.

Carb needs vary widely from person to person. If you’re not very active, you won’t need as many. If you train hard, you can afford (and benefit from) more. That’s why our macro calculator lets you choose a higher or lower carbohydrate intake depending on your goals.

Protein

Protein is essential for building and maintaining muscle. It provides the building blocks for tissue repair and growth rather than energy. Higher-protein diets can help you feel fuller for longer, aid fat loss, and help preserve lean mass while dieting. Research also shows that eating more protein often leads to lower total calorie intake naturally.

Watch our Macros Inc Live Podcast: “All About Protein” episode below, where Dylan Miller and Dr. Brad Dieter break down how much protein you really need, how to hit your targets, and why it’s key for muscle gain, fat loss, and long-term success.

Together, protein, carbs, and fats form your total calorie target. By adjusting their balance — for example, more protein when dieting or more carbs for training — you can fine-tune your progress and feel your best.

Want to learn more? Explore our Ultimate Guide to Counting Macros, see how personalized coaching can dial your macros in for you, or join the Macros Inc Community for free advice and support.

How to Calculate Macros

Our free macro calculator takes a few details about you — your height, weight, sex, age, and activity level — and works out how many calories you burn in a day. It then adjusts that number automatically based on whether you want to lose fat, build muscle, or maintain your current weight, and splits the result into daily protein, carb, and fat targets.

Macros for Weight Loss

  • To lose weight with macros, you need to eat fewer calories than you burn, known as a calorie deficit. The calculator sets a sustainable deficit for you and keeps your protein high to protect muscle while you lose fat, so you’re losing the right kind of weight. You can choose a mild, moderate, or more aggressive deficit depending on how quickly you want to progress and how strict you’re willing to be with tracking.

Macros for Muscle Gain

  • To build muscle with macros, you eat slightly more calories than you burn, known as a calorie surplus. The calculator sizes that surplus to your training experience, age, and weight, because a beginner can grow on a larger surplus while an experienced lifter needs a smaller, more careful one to bulk successfully without piling on excess fat. Pair your macros with a structured plan from our free muscle gain workouts to get the most from the surplus.

Macros for Maintenance

  • If you want to maintain your weight after weight loss, you simply eat at the number of calories you burn each day. The calculator gives you an accurate maintenance figure to anchor to, which is also the smart place to start if you’re new to tracking and want to learn your numbers before pushing toward fat loss or muscle gain. For extra support, join our free Macros Inc Facebook community.

The best part about using this macronutrient calculator is that it’s free, quick, and doesn’t require downloading any apps or subscriptions.

So why should I count macros to reach my goals instead of just counting calories?

Trick question! When you track macros, you’re already tracking calories. Counting macros helps you focus on the right nutrients — protein, carbs, and fats — in the right balance to achieve better results.

Tracking macros is the easiest way to understand how many calories and macronutrients you should eat. It’s been trusted by millions of people worldwide to reach their goals.

Why Tracking Macros Is the Best Approach for Fat Loss

Flexible Dieting: Eat the Foods You Love and Still Lose Weight

A macro-based approach to nutrition focuses on balancing your intake of protein, carbs, and fats rather than cutting out foods. Use the calculator above to estimate your calorie needs, then tailor your nutrition for sustainable fat loss, muscle gain, or maintenance.

Tracking your macros is simpler than it sounds: you log what you eat in an app or notebook, weigh your portions in grams for accuracy, and aim to land close to your protein, carb, and fat targets by the end of the day. It feels fiddly at first but becomes second nature within a week or two. Our guide to flexible dieting walks you through the full method.

The freedom comes from realizing there are no “forbidden” foods. You can fit pizza, cake, or ice cream into your day and still lose fat, because what matters most is your overall calorie and macro balance. Sustainable results come from consistency, not restriction, and you can learn to apply this with our personalized nutrition coaching.

Person tracking macros for flexible dieting and fat loss

The 80/20 Nutrition Rule

While flexibility is key, food quality still matters. A good rule of thumb is to make roughly 80% of your diet from whole, minimally processed foods such as lean proteins, fruits, vegetables, and whole grains. The remaining 20% can come from foods you crave and enjoy — a principle often called the 80/20 nutrition rule.

This balance supports both results and adherence. It is how thousands of Macros Inc clients achieve fat loss without feeling restricted. Stocking up on high-protein recipes makes hitting that 80% far easier day to day.

80/20 nutrition rule for balanced macro tracking

Health, Not Perfection

Eating only “clean” foods does not automatically make you healthy, and enjoying a cookie does not make you unhealthy. Body composition and overall health are not the same thing, but they are connected. Maintaining a healthy body weight often improves blood pressure, energy, and longevity, even if your diet includes the occasional treat.

For more guidance on building sustainable eating habits, explore our Ultimate Guide to Counting Macros, or join the Macros Inc Community to connect with others on the same journey.

Healthy sustainable eating habits while tracking macros

What can I expect

Tracking Macros?

Clarity. Consistency. Real progress.

Tracking macros helps you see exactly what your body needs and why your past diets stopped working. It turns eating better from guesswork into a clear, measurable plan you can actually stick to.

You’ll learn how to balance protein, carbs, and fat to reach your goals faster, whether that’s fat loss, muscle gain, or simply feeling better in your own skin.

Expect fewer plateaus, less frustration, and a better understanding of your food choices. It’s not about restriction, it’s about awareness and control.

And if you ever want help applying it, our coaches can review your food logs and guide you every step of the way so the numbers finally turn into real results.

Once I’ve calculated my macros, what macro tracking app should I use?

Download our tracking app, Macro Sync. It’s free, full of premium features and makes tracking your macros easy.

Once you’ve used our free calculator, you can download Macro Sync and start tracking straight away. Or download the app now, and use the inbuilt calculator.

 

Macro-Sync-Link-for-Blog
Macro Calculator FAQ
Is this macro calculator free?
Yes, it is completely free. There is no app to download and no subscription required. You get your personalized macros instantly on the page, and we can email them to you along with simple tips to get started.
How accurate is a macro calculator?
A macro calculator gives you an accurate, science-based starting point rather than a guaranteed final number. Because everyone’s metabolism is slightly different, the best approach is to follow your macros for two to three weeks, track your weight trend, and adjust from there. This is exactly what a coach does for you if you want results faster.
What macros should I eat to lose weight?
To lose weight you need a calorie deficit, eating slightly fewer calories than you burn, with protein kept high to protect muscle while you lose fat. When you choose the fat loss goal, the calculator sets this deficit and macro split for you. You can read more in our guide on how to lose weight with macros.
What macros should I eat to build muscle?
To build muscle you need a small calorie surplus, eating slightly more than you burn, with enough protein to support growth and recovery. The calculator sizes this surplus to your training experience, age, and weight when you select the muscle gain goal, so you grow without excess fat gain. See our guide on how to bulk successfully.
How do I track my macros once I have them?
Log the food you eat in an app or notebook, weigh your portions in grams for accuracy, and aim to land close to your protein, carb, and fat targets by the end of each day. It feels fiddly at first but becomes second nature within a week or two as your regular meals become familiar. Our guide to flexible dieting covers the full method.
How often should I recalculate my macros?
Recalculate when your weight changes by around 10 pounds, when your activity level shifts, or when your goal changes, for example moving from fat loss to maintenance. Day to day, you do not need to change your numbers; consistency over a few weeks is what drives results.
Do I need to count calories as well as macros?
No, tracking macros already tracks your calories. Your protein, carbs, and fat add up to your total calorie target, so when you hit your macros you are automatically hitting your calories. Counting macros simply gives you more control over the balance of nutrients, which leads to better results than calories alone.
Do I have to lift weights to use the macro calculator?
No. The calculator works whether or not you train. If you do resistance training, it raises your protein target to help you build and protect muscle, but you will still get accurate calorie and macro targets if you do not lift. Pairing your macros with our free workout plans will help you get the most from them.
What if I want help hitting my macros?
Your calculator results are a strong starting point, but everyone responds differently. A Macros Inc coach reviews your food logs, spots the small things that stall progress, and adjusts your macros as your body changes. You can see how our coaching works or start a free coaching trial.