Weight Loss Calculator
Calculate realistic fat loss timelines with metabolic adaptation modeling
Total weight to lose: 10 kg (22 lbs)
Mathematical Formula & Scientific Methodology
Formula: Dynamic Wishnofsky Fat Loss Model
Weeks = (Weight To Lose × 7700 kcal) / (Daily Deficit × 7 × Adaptation Factor)Applies clinical energy balance with real-world metabolic dampening.
Model Assumptions
- Consistent dietary compliance
Variables & Standard Units
| Symbol | Physiological Meaning | Unit |
|---|---|---|
| 7700 kcal | Energy equivalent per kg of human adipose tissue | dimensionless |
| Adaptation Factor | Accounts for down-regulation of NEAT and basal expenditure as mass declines | dimensionless |
Scientific Limitations
- Initial 1-2 weeks typically show rapid transient water and glycogen drops
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
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