Calculate your skeletal muscle mass percentage based on body measurements including age, height, weight, waist circumference, and body fat percentage.
Skeletal Muscle Mass
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Muscle Mass Percentage
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Lean Body Mass
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Estimated Body Fat
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Skeletal muscle mass refers to the total weight of muscles attached to your skeleton that you can voluntarily control. It's important for strength, mobility, metabolism, and overall health as you age.
This calculator provides estimates based on established body composition formulas. For the most accurate measurements, consider DEXA scans or bioelectrical impedance analysis performed by healthcare professionals.
Lean body mass includes all body weight except fat (muscles, bones, organs, water). Muscle mass specifically refers only to the weight of muscle tissue in your body.
No, body fat percentage is optional. If you don't provide it, the calculator will estimate your body fat based on your age, gender, and other measurements.
Age, gender, genetics, physical activity level, nutrition, and hormones all influence skeletal muscle mass. Men typically have higher muscle mass than women, and muscle mass naturally decreases with age without resistance training.
Regular resistance training, adequate protein intake, proper rest, and progressive overload in your workouts are key to building skeletal muscle mass. Consistency over time is essential for meaningful gains.
For men, 38-54% is considered normal, while for women, 28-39% is typical. These ranges vary with age, with younger adults generally having higher percentages than older adults.
Waist circumference helps estimate body fat distribution and overall body composition, which is necessary to calculate lean body mass and subsequently skeletal muscle mass.