Navy Body Fat — Tape Method Units Metric (cm) Imperial (in) Sex Male Female Height (cm) Barefoot, standing tall. Neck (cm) Below larynx, tape angled slightly down at front. Waist (cm) Men: at navel. Women: natural waist (narrowest). Hips (cm) Women only: widest buttocks. Use 2–3 readings per site (auto-average) Neck readings (cm) Waist readings (cm) Hip readings (cm) If you enter any reading(s) above, their average will overwrite the single-box value for that site. Calculate Copy summary Reset Please check your inputs (waist must exceed neck; all values must be positive).