Body Fat Calculator

Estimate your body fat percentage using the US Navy method from body measurements.

✓ Free to use ✓ Instant results ✓ Mobile friendly ✓ No sign-up needed

Sex

Height (cm)

Neck (cm)

Waist (cm)

Hip (cm) — Women only

Body Fat %

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US Navy Body Fat Method

The US Navy method uses neck, waist (and hip for women) circumference measurements along with height to estimate body fat percentage.

What is a healthy body fat percentage?+

For men: 6–24% is healthy. For women: 16–30% is healthy. Athletes tend to be at the lower end.

How accurate is this method?+

The Navy method is accurate to within 3–4% for most people. DEXA scanning is the gold standard.