Navy method
Neck, waist, height (+ hips).
When to use: You can measure girths—usually better than BMI-only estimates; feeds Katch/Cunningham/Tinsley.
Calculator
US Navy
Fill in fields.
Estimate, not medical advice.
US Navy method
Neck, waist, height; women also hips. Log formula — estimate, not DEXA.
- Measure consistently
- Tape error moves the %