Macro Ratio Calculator
Calculate exact macro targets for balanced, low-carb, keto, or high-protein ratios
Targeting 2200 daily calories
| Macronutrient | % of Calories | Daily Calories | Grams Target |
|---|---|---|---|
| Protein | 25% | 550 kcal | 138 g |
| Carbohydrate | 45% | 990 kcal | 248 g |
| Dietary Fat | 30% | 660 kcal | 73 g |
Mathematical Formula & Scientific Methodology
Formula: Macro Percentage Partitioning
Grams = (Total Calories × Ratio %) / Energy Density (4 or 9 kcal/g)Apportions daily energy across the three primary macro categories.
Model Assumptions
- Caloric target matches energy expenditure goals
Variables & Standard Units
| Symbol | Physiological Meaning | Unit |
|---|---|---|
| Ratio % | Target percentage allocated to the macronutrient | dimensionless |
| Total Calories | Daily energetic allowance in kcal | kcal |
Scientific Limitations
- Percentage ratios can under-prescribe protein in deep caloric deficits
Peer-Reviewed Scientific Citations
Obesity: preventing and managing the global epidemic. Report of a WHO consultation (2000)
World Health Organization (2000) — WHO Technical Report Series, 894, 1-253
Key Finding: Standard international adult BMI classifications: Underweight (<18.5), Normal (18.5-24.9), Overweight (25.0-29.9), Obesity Class I (30.0-34.9), Class II (35.0-39.9), Class III (>=40.0).
Frequently Asked Questions
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