Body Fat Calculator

Estimate your body fat percentage using the US Navy circumference method.

Measured at navel level

Measured below larynx

Females only — widest point

How to Use This Calculator

  1. Enter your Sex.
  2. Enter your Weight (kg).
  3. Enter your Height (cm).
  4. Enter your Waist Circumference (cm) — Measured at navel level.
  5. Enter your Neck Circumference (cm) — Measured below larynx.
  6. Enter your Hip Circumference (cm) — Females only — widest point.
  7. Click Calculate to see instant results with a step-by-step breakdown.
  8. Use the Share button to copy a link with your inputs pre-filled.

⚠️ Results are for informational purposes only. Always verify important calculations with a qualified professional.