Body Fat % Calculator
The Navy method is a quick estimator. For accuracy, use DEXA or BIA scales — this is for ballpark only.
Type waist (cm) as numerator and height (cm) as denominator for a rough waist-to-height ratio. Navy formula needs neck too — use a dedicated tool for accurate body fat percentage.
Worked examples
Waist 80cm / height 180cm = 44.4% — under 50% suggests healthier visceral fat range.
Sources:
NHS healthy weight
· retrieved 2026-05-12.
Frequently asked questions
Is BMI better?
BMI is faster but ignores body composition. WHtR (waist-to-height) is a better single-number screening tool for visceral fat.