Calculate your body fat percentage using the US Navy circumference method — one of the most accurate non-invasive methods available. Only requires a measuring tape.
The US Navy method has an accuracy of ±3–4% compared to DEXA scan (gold standard). It is more accurate than BMI for determining true body composition, as it accounts for body shape rather than just height and weight.
For men: measure at the navel level. For women: measure at the narrowest point of the torso. Keep the tape parallel to the floor and measure after exhaling normally. Do not suck in your stomach.