Macro Calculator

Calculate your daily protein, carbohydrate, and fat targets based on your calorie needs and fitness goals.

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1. Enter your total daily calorie target or calculate it with the linked calorie calculator. 2. Select your goal - fat loss, muscle gain, maintenance, or custom split. 3. Review the recommended protein, carbohydrate, and fat percentages for your goal. 4. View daily grams and calories for each macronutrient. 5. Set the number of meals per day to see per-meal macro breakdowns.

About This Tool

Tracking macronutrients - protein, carbohydrates, and fat - gives you much more control over your nutrition than counting calories alone. Our Macro Calculator takes your daily calorie target and distributes it across the three macronutrients based on your specific goal, whether that is fat loss, muscle building, maintenance, or a custom split.

The calculator offers preset macro ratios optimized for common goals. For fat loss, a higher protein ratio helps preserve muscle mass. For muscle gain, balanced carbohydrates and protein support training and recovery. You can also enter a completely custom percentage split if you follow a specific dietary approach like keto, low-carb, or zone.

Results show daily grams and calories for each macronutrient, along with per-meal breakdowns based on how many meals you eat per day. This makes it easy to plan and prep meals that hit your targets consistently.

Formula / How It Works

Protein calories = total calories x protein %. Protein grams = protein calories / 4. Carb grams = carb calories / 4. Fat grams = fat calories / 9.

Frequently Asked Questions

Macronutrients are the three main nutrients your body needs in large amounts: protein (4 calories per gram), carbohydrates (4 calories per gram), and fat (9 calories per gram). Each serves different functions in energy, muscle building, hormone production, and organ protection.
A common macro split for fat loss is 40% protein, 30% carbohydrates, and 30% fat. The higher protein helps preserve lean muscle during a calorie deficit. However, the best ratio is one you can maintain consistently.
Research suggests 1.6-2.2 grams of protein per kilogram of body weight per day for optimal muscle growth when combined with resistance training. This typically works out to about 30-35% of total calories for most people.
Total calories determine whether you gain, lose, or maintain weight. Macros determine the quality of that weight change - higher protein during a deficit preserves muscle, while adequate carbs support training performance. Both matter, but calories come first.
For best results, aim to hit your targets most days of the week. Some flexibility is fine - look at weekly averages rather than stressing over a single day. Many people find tracking for 4-8 weeks builds enough intuition to estimate portions without constant tracking.

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