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Medical CalculatorFitness

Muscle Mass Calculator

Calculate your estimated muscle mass based on your body weight and body fat percentage. Track your muscle gain progress over time.

Updated 2024-12-153 min readCalzyra Health Team

Calculator

Enter your values below

Health CalculatorEvidence-Based

kg

Your current body weight.

%

Your estimated body fat percentage.

Formula & Methodology

How this calculator works

Muscle Mass = Weight × (1 - BF% / 100) × 0.40

Lean body mass is calculated first, then approximately 40% of lean mass is estimated to be skeletal muscle. This gives a reasonable estimate of total muscle mass.

Frequently Asked Questions

Common questions about this calculator

Medical Disclaimer

Exercise recommendations are general guidelines. Consult a physician before starting any new exercise program, especially if you have health conditions.

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References

WHO GuidelinesCDC ResourcesAHA Recommendations