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Body Fat Calculator

Estimate body fat percentage

body fatbody fat percentagelean mass

📖 How to Use

  1. Select your gender
  2. Enter height, neck circumference, and waist circumference
  3. Women also need hip circumference
  4. Click Calculate Body Fat

📐 Formula

US Navy method:
Male = 86.01×log₁₀(waist−neck) − 70.041×log₁₀(height) + 36.76
Female = 163.205×log₁₀(waist+hip−neck) − 97.684×log₁₀(height) − 78.387

❓ FAQ

What's a normal body fat percentage?
Men: 10–20%, Women: 18–28% is considered healthy.

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About Body Fat Calculator

This tool is completely free, no registration required. Works directly in your browser. Supports both PC and mobile devices.

Body Fat Calculator is a free online tool that works on both PC and mobile. No registration or download required — just open in your browser. Results are accurate and reliable for everyday use and professional reference.