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Body Composition

Lean Body
Mass

Calculate your pure muscle weight, muscle-to-fat ratio, and get personalized protein recommendations based on your lean mass.

Total Body Weight
kg
Body Fat %Measure it →
%
Lean Body Mass
-- kg
Lean Mass —% Fat Mass —%
Fat Mass
Muscle-to-Fat Ratio
Min Protein (1.6g/kg)
Max Protein (2.4g/kg)
Fat to Lose (to ideal)
Ideal Body Weight
Muscle-to-Fat Ratio Guide
RatioClassificationAction
5:1 or higherElite athleteMaintain
3:1 – 5:1Fit & healthyOptimize
2:1 – 3:1AverageBuild muscle or cut fat
Below 2:1High fat massPriority: fat loss

Why Lean Body Mass Is More Useful Than Body Weight

The scale only tells you total body weight. Lean Body Mass (LBM) is your total weight minus fat mass — a far more accurate indicator of fitness progress. LBM is essential for calculating accurate protein needs, BMR, and supplement dosing.

Tracking Body Composition Over Time

Measure your body fat percentage and recalculate your LBM every 4–8 weeks. A positive trend in LBM with stable or decreasing fat mass is the true marker of a successful transformation.