Body Fat Calculator

Estimate body fat percentage using the US Navy method with neck, waist, and hip measurements.

How to Use

  1. Select gender and enter age, weight, height.
  2. Measure neck, waist, and hip (hip required for women).
  3. Click Calculate for body fat % and category.

US Navy body fat method

This formula estimates body fat from circumference measurements. Measure neck below the larynx, waist at navel (men) or narrowest point, and hips at the widest point (women).

Frequently Asked Questions

What method does this use?
The US Navy circumference method using neck, waist, and hip measurements.
How accurate is it?
It is a field estimate. DEXA or hydrostatic weighing is more precise. Measure consistently for trends.

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