Macro Calculator
Find out exactly how much protein, carbs, and fat to eat for your goals. Enter your details below to get your personalized macro targets.
Enter Your Details
Enter your details above to calculate your macro targets.
What Are Macros?
Macros is short for macronutrients — the three main nutrients your body needs in large amounts. Everything you eat is made up of these three things: protein, carbohydrates, and fat.
Each macro has calories. Protein has 4 calories per gram. Carbs have 4 calories per gram. Fat has 9 calories per gram. When people talk about calories, they are really talking about macros — just measured differently.
Protein
Builds and repairs muscle, keeps you full
Carbs
Your body's main energy source
Fat
Hormones, brain function, vitamin absorption
How This Calculator Works
This calculator starts with your total calories (TDEE) and divides them into protein, carbs, and fat based on your goal and diet style.
Protein comes first. We set your protein based on your body weight because that is what research shows matters most for muscle. Then we set fat at a healthy minimum. Whatever calories are left go to carbs.
Different diet styles adjust these ratios. High protein gives you extra protein for muscle building. Low carb reduces carbs and increases fat. Balanced is right in the middle.
How Much Protein Do You Need?
Protein is the most important macro for anyone who lifts weights. It builds muscle, helps you recover from workouts, and keeps you feeling full when dieting.
Research consistently shows that active people need more protein than the standard recommendation. For muscle building or fat loss, aim for 0.8-1.2 grams per pound of body weight.
Quick Protein Guide
150 lb person: 120-180g protein per day
175 lb person: 140-210g protein per day
200 lb person: 160-240g protein per day
Which Diet Style Is Best?
The best diet is the one you can stick to. All three styles in this calculator can work for fat loss or muscle building. The difference is personal preference.
Balanced
Good for most people. Enough protein, plenty of carbs for energy, moderate fat. This is what most nutrition experts recommend.
High Protein
Best for building muscle or keeping muscle while losing fat. More protein means more fullness and better recovery. Good if you lift weights hard.
Low Carb
Some people feel better eating fewer carbs. This style works if you prefer fattier foods and do not do much high-intensity exercise. May reduce workout performance.
How to Track Your Macros
You do not need to track perfectly. Getting within 10% of your targets is close enough. Focus on hitting protein first — that is the most important number. Carbs and fat can be more flexible.
Apps like MyFitnessPal make tracking easier. Scan barcodes, log meals, and see your daily totals. Even tracking for just a few weeks helps you learn what proper portions look like.
Or skip the tracking entirely. Just eat protein at every meal, include vegetables, and stop when you are satisfied. This simple approach works for millions of people.
Frequently Asked Questions
What are macros?
Macros (short for macronutrients) are the three main nutrients your body needs in large amounts: protein, carbohydrates, and fat. Each one has a different job. Protein builds and repairs muscle. Carbs give you energy. Fat helps your hormones work and absorbs vitamins. Your body needs all three to be healthy.
How much protein do I need?
For most people who exercise, 0.8-1.2 grams of protein per pound of body weight is ideal. If you weigh 175 pounds, that is 140-210 grams of protein per day. People trying to build muscle or lose fat while keeping muscle should aim for the higher end of this range.
Are carbs bad for you?
No. Carbs are your body's main source of energy, especially during exercise. Low-carb diets can work for fat loss, but not because carbs are "bad" — they work by reducing total calories. Unless you have a medical reason to avoid carbs, including them in your diet is perfectly healthy and can actually improve workout performance.
What is the best macro split for fat loss?
For fat loss, the most important thing is eating fewer calories than you burn. That said, higher protein helps you keep muscle while losing fat. A good starting point is 1 gram of protein per pound of bodyweight, 0.3-0.4 grams of fat per pound, and fill the rest with carbs. Adjust based on how you feel and perform.
Do I need to track macros exactly?
No. Tracking macros exactly is useful when you are learning what proper portions look like or when you have very specific goals. But for most people, getting close is good enough. Focus on hitting your protein target first — that matters most. Carbs and fats can be more flexible.
Can I build muscle without counting macros?
Yes. Many people build impressive muscle without tracking a single macro. The basics are simple: eat enough protein (aim for meat, fish, eggs, or dairy at every meal), eat enough total food to support training, and lift weights consistently. Tracking helps optimize, but it is not required.
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