male, 82 kg, 180 cm
- Estimated fat mass
- 19.766 kg
- Lean percent
- 75.8951219512%
- Formula
- Boer
Lean Body Mass Calculator
Use this free lean body mass calculator to estimate fat-free mass using the Boer formula.
Research-based formula Estimate limits shown Examples included Private history
Formula steps
- Use height and weight in the Boer lean body mass equation.
- Subtract estimated lean mass from body weight for an approximate fat-mass comparison.
- Use consistent measurements if tracking changes over time.
How to use the lean body mass calculator
- Enter the requested measurements, dates, lab values, or workout details.
- Check that the units and formula assumptions match what the tool is asking for.
- Press the calculate button to see the answer, supporting metrics, and formula steps.
- Read the estimate with the health disclaimer in mind, then copy the result if you need it for notes.
Common uses
Estimate lean body mass for fitness planning.
Compare lean mass with body weight.
Use a formula estimate when body fat percentage is unknown.
Track changes only as rough estimates.
Examples
Lean body mass estimate
Lean body mass estimate
Estimated lean percentage
Frequently asked questions
Quick answers about formulas, inputs, estimate limits, professional guidance, examples, and private in-browser history.
What can I use the Lean Body Mass Calculator for?
Use it for quick educational estimates, planning, comparison, and trend checks. Health and fitness results should be interpreted with context, not as a diagnosis.
How does the Lean Body Mass Calculator calculate the result?
The calculator uses Boer lean body mass equations based on height, weight, and formula sex.
Is this medical advice?
No. This page provides an educational estimate only. Talk with a qualified health professional before making medical, pregnancy, nutrition, medication, or safety decisions.
Are my health inputs private?
Yes. The calculator runs in your browser tab. Recent answers stay only on the page while you use it and are not sent to a server.