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Body Fat Calculator

Estimate body fat percentage from tape measurements (US Navy method).

How to use

  1. Measure your neck below the larynx and waist at the navel (hips too, for women) with a tape.
  2. Enter the measurements in centimetres.
  3. Read your estimated body fat percentage and category.

Frequently asked questions

How accurate is the tape method?

Typically within ±3-4% of lab methods like DEXA when measurements are taken carefully - good for tracking trends over time.

What's a healthy body fat percentage?

Roughly 10-20% for men and 18-28% for women, varying with age and athletics. Essential fat minimums are ~3% (men) and ~12% (women).

Is this medical advice?

No - it's a general estimate. Talk to a healthcare professional about your individual health.

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