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Estimate your body fat percentage using the US Navy circumference method.
This calculator provides estimates only and is not medical advice. Results can vary based on individual health, lifestyle, medication, cycle regularity, and other factors. Consult a qualified healthcare professional for medical guidance.
US Navy Method. Male: 86.01×log(waist-neck) - 70.041×log(height) + 36.76. Female includes hip measurement.
Result: Body Fat: 21.5%, Category: Fitness
Within 3-5% of DEXA scans for most people. Accuracy varies by body type and hydration.
Men: 10-20%. Women: 18-28%. Athletes are typically lower.
Measure every 4 to 6 weeks to track meaningful trends, as daily fluctuations from hydration levels can skew individual results significantly.
Combine a moderate calorie deficit of 300 to 500 calories per day with resistance training to preserve muscle mass while losing fat.