How do I calculate my macros for weight loss?

Start with TDEE minus 300-500 calories. Set protein at 0.8-1g per pound of bodyweight, fat at 25-30% of total calories, and fill remaining calories with carbs.

What is the best macro ratio for muscle gain?

A 25% protein / 50% carbs / 25% fat split works well for most people in a caloric surplus. Higher carbs fuel training and glycogen replenishment.

Is counting macros better than counting calories?

Yes. Calories alone determine weight change, but macros determine whether that change is muscle or fat. Macro tracking produces better body composition results.

How much protein do I really need?

0.7-1g per pound of bodyweight covers virtually everyone. During fat loss, aim higher (0.8-1g/lb) to preserve muscle. Above 1g/lb rarely provides additional benefit.

How to Calculate Macros for Fat Loss, Muscle Gain, or Maintenance

Macronutrients: protein, carbs, fat

0.8–1g

Protein per lb bodyweight for most goals

4-4-9

Calories per gram: protein, carbs, fat

🔑

Macros vs. Calories — Why Both Matter

Total calories determine whether you lose or gain weight. Macros determine what you lose or gain — fat, muscle, or water. Two people eating 2,000 calories can have dramatically different body composition results depending on how those calories are split between protein, carbs, and fat.

🧬 What Are Macronutrients?

Macronutrients are the three categories of nutrients that provide calories:

Macro	Calories/gram	Primary Role	Sources
Protein	4 kcal/g	Muscle repair, enzymes, satiety	Meat, fish, eggs, dairy, legumes
Carbohydrates	4 kcal/g	Fuel for brain and high-intensity exercise	Grains, fruit, vegetables, sugar
Fat	9 kcal/g	Hormones, cell membranes, fat-soluble vitamins	Oils, nuts, meat, dairy, avocado

📊 How to Set Your Macros: Step by Step

Macro calculation always starts from your calorie target. Get that right first, then allocate macros within it.

📝

The 4-Step Process

Step 1: Calculate your TDEE (maintenance calories)
Step 2: Apply your goal deficit or surplus (–300–500 kcal for fat loss, +200–300 for muscle gain)
Step 3: Set protein target first (0.8–1g per lb bodyweight)
Step 4: Divide remaining calories between carbs and fat based on preference

🎯 Macro Targets by Goal

📉

Fat Loss

Calories:TDEE − 300–500

Protein:0.8–1g/lb

Fat:25–30% of calories

Carbs fill

remainder

of calories

📈

Muscle Gain

Calories:TDEE + 200–300

Protein:0.7–0.9g/lb

Carbs:45–55% of calories

Fat ~

25%

of calories

⚖️

Maintenance / Recomp

Calories:At TDEE

Protein:0.75–1g/lb

Balance:Equal carbs/fat split

Flexible

ratio

by preference

🥩 Why Protein Is Set First

Protein is the non-negotiable macro. Here's why it gets locked in before anything else:

Muscle preservation: During a calorie deficit, adequate protein (0.8–1g/lb) is the primary driver of muscle retention. Drop protein and you lose muscle alongside fat.
Satiety: Protein is the most satiating macro per calorie. Higher protein intakes reduce hunger and spontaneous calorie intake without willpower.
Thermic effect: 20–30% of protein calories are burned in digestion, vs. 5–10% for carbs and 0–3% for fat. Protein has the highest metabolic cost of eating.
Ceiling effect: Research consistently shows diminishing returns above 1g per pound of bodyweight. You don't need to go higher — and excessive protein crowds out carbs needed for performance.

⚠️

Don't Fear Carbs

Low-carb diets work for fat loss — but not because carbs are bad. They work because restricting a major food group reduces total calorie intake. If you hit your protein target and calorie deficit, carb percentage matters far less than compliance. Choose the carb level you can sustain.

📐 Example Calculation

Example: 175 lb male, 2,400 kcal TDEE, fat loss goal (eating 1,900 kcal):

Macro	Target	Grams	Calories
Protein	1g/lb × 175 lb	175g	700 kcal
Fat	30% of 1,900	63g	570 kcal
Carbs	Remainder	158g	630 kcal
Total			1,900 kcal

💡

Track for 2 Weeks, Then Adjust

Formulas give you a starting point — your body gives you the data. Track body weight daily (use a 7-day average), and if you're not moving toward your goal after 2 full weeks, adjust calories by 100–200 kcal. Don't change macros and calories simultaneously — isolate one variable at a time.

🧮 Use the Calculator

Enter your weight, goal, and activity level into our Macro Calculator to get personalized protein, carb, and fat targets in grams — along with a daily calorie target based on your TDEE. No spreadsheet required.