Body Fat Calculator

It's typically accurate within about ±3-4% compared to DEXA scans for most people, making it one of the more reliable tape-measure-based methods, though individual body shapes can affect accuracy.

Measure your neck just below the larynx (Adam's apple), tilting slightly down. Measure your waist at its narrowest point, typically just above the belly button. Keep the tape snug but not compressing the skin.

The formula for women includes hip circumference because body fat distribution differs by sex, and the female-specific formula was calibrated separately using additional measurement points for better accuracy.

For men, 10-20% is generally considered fit to healthy; for women, 18-28% is generally considered fit to healthy — athletes often fall below these ranges, while ranges above them are associated with higher health risk.