Body Fat Calculator

The US Navy method estimates body fat from a few tape measurements instead of a scan. Choose male or female, pick inches or centimetres, then enter height, neck and waist, with hip as well for women, plus your body weight. The result gives a body fat percentage, the category it falls in, and how your weight splits between fat mass and lean mass. Tape measurements are easy to take slightly wrong, so treat the number as an estimate rather than medical advice.