Lean Body Mass Calculator
Estimate lean body mass from weight and body fat percentage.
This page is an editable estimator with realistic defaults so you can model your own situation in minutes.
Lean body mass = body weight x (1 - body fat percentage).
Treat the result as a planning estimate and verify important numbers with the relevant official source before acting.
| Body weight | 79.4 kg (175 lb) |
|---|
Assumptions
- Lean body mass depends on the accuracy of the body fat estimate.
- Consumer body fat methods can have large error ranges.
How this calculator works
Formula used
Lean body mass = body weight x (1 - body fat percentage).
Example calculation
Plug in your own numbers and the result updates instantly. Lean body mass = body weight x (1 - body fat percentage).
Lean Body Mass Calculator FAQ
Is this lean body mass calculator medical advice?
No. It is an educational estimate only and should not be used to diagnose, treat, or make medical, nutrition, legal, or emergency decisions.
Why might my real result be different?
Age, sex, body composition, pregnancy, medications, medical conditions, training status, lab methods, and measurement accuracy can all change real-world results.
Should I check these results with a professional?
Yes. Confirm health, nutrition, fitness, kidney function, alcohol, or safety decisions with a qualified professional or official source.