What is lean body mass?

Lean body mass is your total body weight minus fat mass. It includes muscle, bone, organs, skin, and water. It is a useful metric for tracking muscle gain and fat loss separately.

Which formula does this calculator use for women?

The Boer (1984) formula for women: LBM = 0.252 × weight (kg) + 0.473 × height (cm) − 48.3. Women typically have a higher essential fat percentage than men, so the formula differs from the male version.

Why is body fat percentage higher in women?

Women require more essential fat for hormonal and reproductive functions. Healthy body fat for women ranges from about 20–30%, compared to 10–20% for men in the fitness range.

Is my data sent to a server?

All calculations run in your browser. Our servers are not involved at any point.

Lean body mass calculator for women

Estimate your lean body mass (LBM) using the Boer (1984) formula for women. Enter your weight and height to see your LBM in kg and lbs, your fat mass, and your implied body fat percentage. All calculations run locally in your browser.

Sex

Units

Weight (kg)

Height (cm)

How it works

The Boer (1984) formula estimates lean body mass from weight and height. For men: LBM = 0.407 × weight (kg) + 0.267 × height (cm) − 19.2. For women: LBM = 0.252 × weight (kg) + 0.473 × height (cm) − 48.3. Imperial inputs are converted to metric before calculation. Fat mass is calculated as total weight minus LBM, and body fat percentage as fat mass divided by total weight multiplied by 100. All arithmetic runs in JavaScript in your browser.

Processing runs in your browser

All calculations happen locally in your browser tab. Our servers are not involved at any point.

Related operations

For measuring body fat directly with circumference inputs, try the body fat calculator. To check a general weight category, use the BMI calculator. For a reference weight range tied to height, see the ideal weight calculator.

Frequently asked questions

What is lean body mass?: Lean body mass is your total body weight minus fat mass. It includes muscle, bone, organs, skin, and water. It is a useful metric for tracking muscle gain and fat loss separately.
Which formula does this calculator use for women?: The Boer (1984) formula for women: LBM = 0.252 × weight (kg) + 0.473 × height (cm) − 48.3. Women typically have a higher essential fat percentage than men, so the formula differs from the male version.
Why is body fat percentage higher in women?: Women require more essential fat for hormonal and reproductive functions. Healthy body fat for women ranges from about 20–30%, compared to 10–20% for men in the fitness range.
Is my data sent to a server?: All calculations run in your browser. Our servers are not involved at any point.

Lean body mass calculator for women

How it works

Processing runs in your browser

Related operations

Frequently asked questions

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