⚙️ Your measurements
📏 How to measure: Use a flexible tape measure. Waist: at the narrowest point (belly button level). Neck: just below the larynx. Hip (women): at the widest point.
📊 Your results
Enter your measurements and click Calculate to estimate your body fat percentage.
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Estimated body fat
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Fat mass
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Lean mass
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Fat to reach fitness range
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Ideal body fat range
| Category | Men |
|---|---|
| Essential fat | 2–5% |
| Athletic | 6–13% |
| Fitness | 14–17% |
| Average | 18–24% |
| Obese | 25%+ |
Formula: U.S. Navy Body Fat Formula. Men: 86.010×log₁₀(waist−neck) − 70.041×log₁₀(height) + 36.76. Women: 163.205×log₁₀(waist+hip−neck) − 97.684×log₁₀(height) − 78.387. Accuracy: ±3–4% vs DEXA scan.