How does the Navy method work?

The US Navy method uses a tape measure: height, waist, neck, and hip for women. Measure waist at navel level, neck below the larynx, and hip at the widest point. Consistent technique matters more than a single reading.

What is a healthy body fat range?

General fitness ranges are roughly 10–20% for men and 18–28% for women, but individual needs vary. Categories are population guidelines — athletes and older adults may differ from these bands.

How accurate is the Navy method?

For many people, Navy circumference estimates fall within about ±3–4% of DEXA scan results. It is a home tracking tool, not a clinical assessment. Use the same method consistently to watch trends.

BMI-based estimate vs Navy?

The BMI estimate needs only height, weight, age, and sex but is less accurate for muscular builds. Prefer Navy measurements when you can take them consistently with a tape measure.

Athletes and body fat?

Athletic builds may read high on circumference methods because muscle increases limb size. Consider professional measurement (DEXA or hydrostatic) if precision matters for training or medical decisions.