Skeletal Muscle Mass Calculator
Estimate skeletal muscle mass (SMM) using anthropometric prediction
Equivalent to 71.7 lbs of muscle tissue
Mathematical Formula & Scientific Methodology
Formula: Lee Anthropometric Skeletal Muscle Model (2000)
SMM (kg) = 0.244 × Wt + 7.80 × Ht (m) + 6.6 × Sex - 0.098 × Age - 3.3Derived from magnetic resonance imaging (MRI) whole-body multi-slice validation by Lee et al. at Columbia University.
Model Assumptions
- Adults aged 18 to 80
Variables & Standard Units
| Symbol | Physiological Meaning | Unit |
|---|---|---|
| Wt | Total body mass in kilograms | kg |
| Ht | Stature in meters | m |
| Sex | 1 for male, 0 for female | dimensionless |
| Age | Age in complete years | years |
Scientific Limitations
- Underestimates in elite bodybuilders with extreme muscle development
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
Related Calculators & Next Steps
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