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Macronutrient splits

Calculate your macro ratios.

Achieving your body composition goals depends heavily on your macronutrient split. Enter your metrics below to customize your proteins, fats, and carbs.

Macro Calculator

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15 – 80 years
ft
in
lbs
2 – 60%

What are Macronutrients (Macros)?

Macronutrients are the nutritive components of food that the body needs in relatively large amounts for growth, metabolism, and other biological functions. These energy budgets are built on top of your baseline resting metabolism, which you can calculate using our BMR Calculator. To determine your target daily macronutrient grams, you should first estimate your total calorie maintenance needs using our TDEE Calculator. Setting up your target ratios using a free macro calculator is essential for optimizing performance, recovery, and body composition.

For a step-by-step breakdown on tracking your macros and using digital food scales, see our guide: How to Track Macros for Weight Loss or Muscle Gain.

Protein (4 kcal/g)

Essential for building and repairing muscle tissue, organs, and skin. Maintaining a high protein intake (e.g. 0.8–1.0g per pound of body weight) during a fat loss diet prevents muscle waste. If you know your lean body mass from our Body Fat Calculator, you can estimate your target protein needs more accurately.

Fats (9 kcal/g)

Crucial for hormone regulation, cellular health, joint protection, and brain function. Fats are the most energy-dense macronutrient, providing 9 calories per gram.

Carbohydrates (4 kcal/g)

Your body's preferred source of immediate fuel. Carbs are converted into muscle glycogen, which fuels intensive physical workouts and daily brain activity.

Choosing your diet preset

Depending on your lifestyle and training intensity, different macro targets can optimize your results for weight management, which you can monitor over time using our BMI Calculator:

  • Balanced (35% Carbs / 35% Fats / 30% Protein): Ideal for general weight management, moderate workout regimens, and sustainable long-term eating.
  • Low Carb (20% Carbs / 40% Fats / 40% Protein): Favors body fat reduction and higher protein levels. Helps stabilize blood sugar and control hunger cravings.
  • Ketogenic (5% Carbs / 70% Fats / 25% Protein): Restricts carbs heavily to force your body into ketosis, where it burns fat as its primary fuel source.

Why Macro Ratios Matter Over Calories Alone

While weight loss is governed by your overall calorie deficit, body composition (the ratio of muscle to fat) is heavily influenced by your macronutrients. For example, two diets containing the exact same number of calories can yield drastically different physical outcomes. A high-protein diet combined with resistance training ensures that weight lost comes from fat stores rather than metabolically active muscle tissue. Conversely, a diet deficient in protein can lead to muscle wasting, leaving you with a higher body fat percentage even at a lower weight. Using a free macro calculator allows you to plan your macronutrient distribution to protect your metabolism and support your fitness goals.

Tips for Tracking Macros: Raw vs. Cooked & Protein Targets

When tracking macronutrients using a macro tracker or digital food scale, a common dilemma is whether to weigh food raw or cooked. Always weigh food raw whenever possible. Cooking processes alter the weight of food significantly—meats lose water weight and shrink, while grains like rice and oatmeal absorb water and expand. However, their raw nutritional value remains the same. If you must weigh cooked food, ensure you choose the "cooked" entry in your tracking app database to avoid major calorie estimation errors.

To support muscle retention or muscle protein synthesis, aim for a daily protein target of 0.8 to 1.0 grams per pound of body weight. Using a free macro calculator allows you to optimize your carbohydrate and fat targets around this protein core, supporting sustained energy for workouts and proper hormone production.

Why Choose MyHealthCalculate Over Competitors?

Unlike other online tools that overwhelm you with screen-blocking ads, popups, and slow load times, we provide a clean, free, and privacy-first Vercel-style health tracking suite. Here is how we compare to the top health calculators.

Feature / Metric MyHealthCalculate Calculator.net TdeeCalculator.net Healthline
Advertisements & Popups Zero Ads (Clean Experience) Heavy Ads & Scripts Aggressive Ads & Cookies Sticky Display Banners
Dark Mode Support Full Native Support (Toggleable) No (Light Mode Only) No (Light Mode Only) No (Light Mode Only)
Design Aesthetic Premium Vercel-Style (Minimal) Outdated 2000s Layout Basic & Cluttered Layout Standard News / Article Layout
Mobile Optimization 100% Touch-Friendly (Fluid Responsive) Tiny fonts on Mobile viewport Cluttered with ad overlays Ad banners block content
Page Load Speed Ultra-Fast Static (99+ Lighthouse) Medium (Delayed by ad servers) Medium (High script load) Slow (Tracking script overhead)
JSON-LD Structured Schema Fully Optimized Rich Snippet Schemas Basic schemas only Partial schemas Informational Article schemas only

Frequently asked questions.

Answers to common queries regarding macronutrients and daily nutritional ratios.

A macro calculator is an online tool that estimates your daily macronutrient needs—proteins, fats, and carbohydrates—in grams. It takes your total daily calorie target (from maintenance, deficit, or surplus) and distributes those calories across the three macro groups based on your fitness goal.
Macro splits are calculated by dividing your total daily calorie allowance into percentages for protein, fat, and carbohydrates. For example, a standard balanced split is 30% protein, 35% fats, and 35% carbs. Since protein and carbs have 4 calories per gram, and fat has 9 calories per gram, you divide the allocated calories by their respective energy values to get the daily target grams.
For active individuals and those trying to preserve or build muscle, consuming 0.8 to 1.0 grams of protein per pound of body weight (or 1.6 to 2.2 grams per kilogram) is highly recommended. Sedentary individuals require less, typically around 0.36 grams per pound (0.8 grams per kilogram).
The best macro split for fat loss typically involves a higher protein ratio to prevent muscle wasting and control hunger. Common splits include 40% protein, 30% fats, and 30% carbohydrates, or a moderate 35% protein, 35% fats, and 30% carbohydrates split. Creating a caloric deficit remains the primary driver of fat loss.
Always weigh your food raw if possible. Cooking changes food weight due to water absorption (like rice/pasta) or water loss (like meats), but the calorie and macronutrient content remains the exact same as raw weight. Measuring raw ensures consistent tracking.
Yes, body recomposition (building muscle while losing fat) is possible, especially for beginners or individuals with a higher body fat percentage. Maintaining a high protein intake (e.g., 0.8g to 1.0g per pound of body weight) and conducting regular progressive resistance training is crucial for this process.