Lean Body Mass Calculator

Estimate your lean body mass (everything except fat) using the Boer formula.

Weight (kg)

Height (cm)

Sex

Lean body mass

—

Approx fat mass—

This is an estimate for general guidance, not medical advice. For a plan that fits you, talk to a doctor or qualified professional.

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How it works

Men: 0.407w + 0.267h − 19.2; Women: 0.252w + 0.473h − 48.3

Frequently Asked Questions

How does the Lean Body Mass Calculator work?

Estimate your lean body mass (everything except fat) using the Boer formula.

Is this medical advice?

No. It gives general estimates only. For decisions about your health, speak with a qualified professional.