Body Fat Calculator

Estimate your body fat percentage using the U.S. Navy circumference method, along with your fat mass, lean mass, and category.

Enter Your Measurements

All circumferences are in inches. If measured in centimetres, divide each value by 2.54.

Gender

Weight Unit

Height (in)

Weight

Neck (in)

Waist / Abdomen (in)

Hip (in)

Measured at the widest point of the hips.

How It Works

The U.S. Navy method uses circumference measurements and height (in inches) to estimate body density, converted to a body fat percentage.

Formula (men):

86.010 x log10(abdomen - neck) - 70.041 x log10(height) + 36.76

Formula (women):

163.205 x log10(waist + hip - neck) - 97.684 x log10(height) - 78.387

This is an estimate for general guidance only and is not medical advice.

Frequently Asked Questions (FAQ)

The Body Fat Calculator provides precise mathematical estimates based on standard financial compounding, amortisation, or tax formulas.

No! All calculations execute 100% locally in your web browser. No financial figures leave your device.

These outputs are estimates for financial planning. For official filings, consult a certified financial planner or tax professional.

Disclaimer Notice

Disclaimer: The results from this Body Fat Calculator are for estimation and informational purposes only. Actual interest rates, loan approvals, tax liabilities, or investment returns may vary depending on bank policies, market conditions, and government regulations.

Body Fat Calculator

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