Weight Gain Calorie Calculator
Calculate daily calories required for healthy weight gain and mass accrual
Maintenance baseline: 2447 kcal/day
Mathematical Formula & Scientific Methodology
Formula: Positive Energy Balance Model
Target Calories = TDEE + Daily SurplusSupplies excess energy necessary for cellular glycogen, muscle tissue synthesis, and essential fat stores.
Model Assumptions
- Sufficient protein and progressive training for muscular gain
Variables & Standard Units
| Symbol | Physiological Meaning | Unit |
|---|---|---|
| TDEE | Total energy expenditure | kcal |
Scientific Limitations
- Genetic rate of muscle accrual typically caps out at ~1 kg/month for natural trainees
Peer-Reviewed Scientific Citations
A new predictive equation for resting energy expenditure in healthy individuals (1990)
Mifflin MD, St Jeor ST, Hill LA, Scott BJ, Daugherty SA, Koh YO (1990) — The American Journal of Clinical Nutrition, 51(2), 241-247
Key Finding: Mifflin-St Jeor equation is accurate within ±10% of measured REE in non-obese and obese individuals, recommended by the Academy of Nutrition and Dietetics as the most reliable standard equation.
Frequently Asked Questions
Related Calculators & Next Steps
Calorie Surplus Calculator
Calculate energy surplus for lean muscle hypertrophy with minimal fat gain
TDEE Calculator
Total Daily Energy Expenditure based on physical activity level and BMR
Macro Calculator
Calculate balanced protein, carbohydrate, and fat grams for any daily calorie intake