What are macronutrients?

Macronutrients are the nutrients your body needs in large amounts to function: Protein (used for building and repairing tissues), Carbohydrates (your body's primary energy source), and Fats (crucial for hormone production and nutrient absorption).

What is the standard macro ratio split?

A balanced standard split is 30% Protein, 40% Carbohydrates, and 30% Fats. However, bodybuilders often prefer higher protein, and low-carb diets favor higher fats.

How do macros differ for weight loss versus muscle gain?

For weight loss, a higher protein ratio (35-40%) helps preserve muscle mass in a calorie deficit, with lower carbs (25-35%). For muscle gain, carbs should be higher (45-50%) to fuel training and recovery, with moderate protein (25-30%) and fats (20-25%). The total calorie target matters more than the exact macro split for either goal.

Are the calculations on Macro Calculator | Protein, Carb & Fat Intake Goals private?

Yes, completely. All calculations are performed entirely locally inside your browser using JavaScript. No inputs or personal metrics are ever transmitted to or stored on our servers.

Macro Calculator | Protein, Carb & Fat Intake

Macro Calculator – Nutrient TrackingMetriova provides free online calculators for finance, business, health, and construction. Calculate loans, investments, fitness metrics, and project materials in seconds.Macronutrient Ratios by Fitness GoalMacros are the three macronutrients — protein, carbs, and fat — expressed as a percentage of total calories. The classic balanced diet is 50% carbs, 30% protein, 20% fat. Low-carb/keto diets shift to 5-10% carbs, 25-30% protein, 60-70% fat. Protein at 1.6-2.2g per kg bodyweight maximizes muscle synthesis.

Goal

Carbs %

Protein %

Fat %

Balanced

50%

30%

20%

Cutting (fat loss)

40%

20%

Bulking (muscle gain)

45%

30%

25%

Keto

25%

70%

Maintenance

45%

30%

25%