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Body Fat Percentage Calculator

Body Fat Percentage Calculator

Estimate your body fat percentage and lean body mass using the U.S. Navy formula.

Body Measurements

Uses the U.S. Navy body fat formula.

Gender
Height *
cm
Weight *
kg
Measurements
cm
cm
cm

Measure waist at navel, neck below larynx, and (women) hip at widest point.

Enter your measurements (waist, neck, hip) to estimate body fat %.

Estimate your body fat percentage using scientific body measurements. Understand body composition beyond just weight and BMI.

How this is calculated

U.S. Navy Body Fat Formula:

Male: BF% = 86.010 × log₁₀(waist − neck) − 70.041 × log₁₀(height) + 36.76

Female: BF% = 163.205 × log₁₀(waist + hip − neck) − 97.684 × log₁₀(height) − 78.387

Lean Body Mass: LBM = weight × (1 − body fat % / 100)

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Disclaimer

These calculators provide general health and fitness estimates based on the information entered and standard scientific formulas. They are intended for educational and informational purposes only and should not be considered a substitute for professional medical advice, diagnosis, or treatment. Results may vary based on individual health conditions, body composition, lifestyle, medications, and clinical factors. Always consult a qualified healthcare professional or doctor before making significant changes to your diet, exercise routine, medication, or health management plan.