DEXA (dual-energy X-ray absorptiometry) is the practical gold standard for body composition — accurate to within ~1–2% body fat.
Total body fat %, lean mass, and regional breakdown (arms, legs, trunk).
Visceral fat estimate — the number BMI can't see.
Before starting a serious recomposition plan, or if BMI keeps mislabeling you. Otherwise, Navy method + tape is close enough.
Estimate body fat now with the Navy method.
Army-Navy Body Fat Calculator →
BMI can label muscular athletes as overweight or obese. Here's when BMI misses the mark and what to use instead.
The clearest waist guideline for women, based on the NHS and Ashwell Waist-to-Height ratio — no charts, just one rule.
How age changes your healthy weight range, and the simple WHO/CDC formula that answers "how much should I weigh?".