Health

Free Lean Body Mass Calculator

Estimate lean body mass using the Boer formula.

  • Free Forever
  • No Registration Required
  • Instant Results
  • Downloadable Reports
  • Mobile Friendly

Inputs

Result

Lean body mass

58.1 kg

Fat mass17.0 kg
Body fat %22.6%

Your result is ready.

Download your free detailed report — inputs, result, formula and explanation included.

Estimates only. Verify with a professional for consequential decisions.

  • Always Free
  • No Hidden Costs
  • No Account Required
  • Unlimited Calculations
  • Instant Reports

Short answer

Estimate lean body mass using the Boer formula.

What is the Lean Body Mass Calculator?

Estimate lean body mass using the Boer formula.

How does the Lean Body Mass Calculator work?

Enter the inputs above and read the result.

Formula

Boer: LBM = a·W + b·H − c (sex-specific)

Variables

    Explanation

    Boer 1984 formula, widely used in clinical dosing.

    Examples

    Applications

      Advantages

        Limitations

          Common mistakes

            Tips

              Related concepts

              The Lean Body Mass Calculator sits inside the Health Calculators hub, in the body composition cluster. What body mass is made of and how it is distributed. Understanding the terms below makes the output easier to interpret and easier to compare against neighbouring measures.

              fat masslean massadipositypercentilecircumference

              Practical use cases and industry applications

              Understanding Lean Body Mass

              Estimate lean body mass using the Boer formula. Within health calculators, lean body mass belongs to the body composition cluster, where it shares terminology and assumptions with closely related tools.

              Learning how lean body mass is calculated

              Boer 1984 formula, widely used in clinical dosing. Working through the variables one at a time — — makes the result reproducible by hand and easier to sanity-check.

              Using lean body mass to make a decision

              Because outputs depend on the assumptions you enter, run more than one scenario before committing to a figure.

              How lean body mass compares with related measures

              fat mass, lean mass, adiposity, percentile all describe adjacent aspects of body composition. Comparing this calculator's output against those measures — using the related tools listed on this page — prevents a single metric from being read in isolation.

              Frequently asked questions

              Related calculators

              More body composition tools

              We value your privacy

              We use cookies to run the site, remember your preferences, and — with your permission — show relevant ads and measure traffic. See our Cookie Policy.