What are macronutrients?

Macronutrients (macros) are the three types of nutrients your body needs in large amounts: protein (4 calories per gram), carbohydrates (4 calories per gram), and fat (9 calories per gram). Your macro split determines how your daily calories are distributed among these three.

What macro split should I use for weight loss?

For weight loss, a higher protein intake (35-40% of calories) helps preserve muscle mass and keeps you feeling full. A common effective split is 40% protein, 30% carbs, 30% fat. The key is maintaining a calorie deficit — macros determine the quality of your weight loss, not whether you lose weight.

How much protein do I need daily?

For active individuals, 0.7-1.0 grams of protein per pound of body weight is recommended. For a 180-pound person, that's 126-180 grams of protein daily. The calculator adjusts this based on your goal — higher protein for cutting, moderate for maintenance and bulking.

Can I set a keto macro ratio?

Yes. Use the custom ratio option and set fat to 70-75%, protein to 20-25%, and carbs to 5-10%. The calculator will show you the exact grams for each macro within your calorie target.

Why do my macros change when I change my calorie target?

Macro percentages stay the same, but the actual grams change because you're dividing a different total calorie amount into the same ratio. For example, 30% protein at 2,000 calories is 150 grams, but 30% protein at 1,500 calories is 112.5 grams.

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Macro Calculator

A macro calculator breaks your daily calorie target into specific amounts of protein, carbs, and fat. Enter your body details and goal to see recommended macro ratios and exact gram targets for each macronutrient, optimized for weight loss, maintenance, or muscle gain.

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What is Macro Calculator?

A macro calculator is a browser-based tool that computes daily macronutrient targets (protein, carbohydrates, and fat) in grams and calories, using goal-specific ratios and calorie targets derived from the Mifflin-St Jeor equation.

Complementary Tools

These tools work great alongside Macro Calculator:

BMI Calculator Calorie Calculator

Start Using Macro Calculator Today

Counting calories tells you how much to eat. Tracking macros tells you what to eat. This calculator gives you both — the right calorie target for your goal and the optimal macro split to make those calories work for your body composition. Whether you're cutting, maintaining, or bulking, the right macros make the difference between losing weight and losing fat.

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