Body Metrics
Lean Body Mass Calculator
Estimate your lean body mass — everything in your body that isn't fat.
What your result means
Knowing your lean mass is useful for setting protein targets and tracking changes during a recomposition phase.
How we calculate this
We use the Boer formula, which uses height and weight only.
Limitations
Estimates from height and weight alone are coarse — a DEXA scan or InBody machine gives a more accurate breakdown.
Frequently asked questions
Related calculators
Related guides
References
- World Health Organization. https://www.who.int
- NHS — Health A to Z. https://www.nhs.uk
- Centers for Disease Control and Prevention. https://www.cdc.gov
Browse all calculators or read our evidence-based guides.