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Lean Body Mass Calculator

एकके:
लिंग:

What is Lean Body Mass Calculator?

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Lean body mass (LBM) is total body weight minus fat mass. It includes muscle, bone, organs, connective tissue, and water. LBM is used to calculate drug dosages, set protein targets, and assess body composition beyond the limitations of BMI.

Calkulon makes complex calculations simple — built for students and everyday problem-solvers.

How to Lean Body Mass Calculator

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  1. 1Boer Formula (most accurate): Men: 0.407W + 0.267H − 19.2; Women: 0.252W + 0.473H − 48.3
  2. 2James Formula: Men: 1.1W − 128(W/H)²; Women: 1.07W − 148(W/H)²
  3. 3W = weight in kg, H = height in cm
  4. 4Fat mass = Total weight − LBM

Worked Examples

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Example 1
Given:Male, 80 kg, 180 cm
परिणाम:LBM ≈ 63–65 kg, Fat ≈ 15–17 kg

~19% body fat

Example 2
Given:Female, 60 kg, 165 cm
परिणाम:LBM ≈ 45–47 kg, Fat ≈ 13–15 kg

~23% body fat

Healthy Body Fat % by Sex and Age

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AgeMen (healthy)Women (healthy)
20–398–20%21–33%
40–5911–22%23–34%
60–7913–25%24–36%
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Pro Tip

LBM is used in medicine to calculate drug doses (particularly for obese patients) because many drugs distribute in lean tissue, not fat. Dosing by total weight would overdose obese patients.

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Did you know?

Muscles are denser than fat (1.06 vs 0.9 g/cm³), which is why muscular people can weigh more but look leaner. Two people with the same BMI can have vastly different body compositions.

केवळ माहितीच्या उद्देशाने. हे साधन व्यावसायिक वैद्यकीय सल्ला, निदान किंवा उपचारांचा पर्याय नाही. नेहमी पात्र आरोग्य व्यावसायिकांचा सल्ला घ्या.
Deep Dive

Read the full guide on how to use this calculator effectively

अधिक वाचा →
Formula-verified for precision
Reviewed October 2026
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