Body Fat Calculator

Estimate your body fat percentage using the U.S. Navy tape method.

Sex

Height (cm)

Neck (cm)

Waist (cm)

Weight (kg, optional)

Estimated Body Fat

Category	—
Fat mass	—

About the U.S. Navy method

This widely used method estimates body fat from simple tape measurements of the neck, waist (and hips for women) plus height. It is a quick estimate — not as precise as a DEXA scan, but useful for tracking changes over time.

General body fat ranges

Men: 2–5% essential, 6–13% athletic, 14–24% fitness/average, 25%+ high
Women: 10–13% essential, 14–20% athletic, 21–31% fitness/average, 32%+ high