How does the Navy method work?

It estimates body fat from neck, waist (and hip for women) plus height.

Do women need the hip measurement?

Yes — it is required for the female formula.

No — it is an estimate; DEXA scans are more accurate.

Estimate body-fat percentage, fat mass and lean mass from tape measurements using the US Navy method. In-browser.

SexHeight

Neck

Waist

Hip (female)

Weight (optional)

Body fat16.11%