BodyMetricPrecision Health & Fitness

Calorie Surplus Calculator

Calculate energy surplus for lean muscle hypertrophy with minimal fat gain

Input Parameters
years
Real-time calculation updates dynamically as you adjust inputs. Values remain strictly local on your device.
Lean Muscle Surplus Target (+10%)Lean Hypertrophy
3288kcal/day

Surplus of +299 kcal above maintenance (2989 kcal)

Aggressive Mass (+15%)
3437kcal/day
Target Gain Pace
~0.25 kgper week
Clinical Responsibility Note: This calculation provides statistical estimations for informational and educational purposes only. It is not an individualized medical diagnosis or clinical prescription.

Mathematical Formula & Scientific Methodology

Formula: Lean Hypertrophy Energy Surplus

Intake = TDEE × 1.10 to 1.15

Provides the positive energy balance required for amino acid accretion while keeping fat cell hypertrophy minimal.

Model Assumptions

  • Progressive resistance training stimulus present

Variables & Standard Units

SymbolPhysiological MeaningUnit
TDEETotal energy expendituredimensionless

Scientific Limitations

  • Surpluses above 20% primarily result in excess adipose tissue storage rather than faster muscle growth

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