💪 Body Fat Calculator

Estimate your body fat percentage using the US Navy method based on waist, neck, and height measurements.

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Body Fat Calculator

Health

Inputs

cm
cm
cm
cm

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How to Use This Calculator

  1. 1

    Select your gender.

  2. 2

    Measure your height, waist (at navel), and neck circumference.

  3. 3

    Women also need to measure hip circumference at the widest point.

  4. 4

    Enter measurements in centimeters and click Calculate.

How It Works

Uses the US Navy circumference method. Measure waist at the narrowest point (men) or at the navel (women). Neck measured just below the larynx. This method is accurate within 3–4% compared to DEXA scans.

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Frequently Asked Questions

For men: 10–20% is healthy, 14–17% is fitness level. For women: 18–28% is healthy, 21–24% is fitness level.

Why Use This Tool

  • Instant, accurate results
  • No registration required
  • 100% free forever
  • Works on all devices
  • Privacy — no data stored