Macro Calculator accuracy and testing

Formula source

• Macronutrients have specific energy values: * **Protein:** 4 calories per gram * **Carbohydrates:** 4 calories per gram * **Fats:** 9 calories per gram The calculator takes your total calorie goal and divides it according to the selected ratio (e.g., 40% Protein / 30% Carbs / 30% Fat).

Test cases

Known limitations

• This page documents the checked-in calculator logic and does not certify results for every real-world edge case.
• Use the result as a planning estimate unless the calculator page states a stricter purpose.

Assumptions

• Macro grams are derived from fixed calorie values of 4 calories per gram for protein and carbs and 9 for fat.
• Diet plans use preset percentage splits rather than a fully individualized coaching model.
• Your best macro split may still depend on training style, satiety, digestion, and food preferences.

Unit handling

• Daily Calories accepts values in kcal.
• Diet Plan accepts one of the configured options.
• Protein is displayed in g.
• Carbs is displayed in g.
• Fats is displayed in g.

Rounding rules

• Number displays use up to 2 decimal places in the calculator UI.

Version history

Change log