Body Fat % for a 180 cm Male with 90 cm Waist
Estimate the body fat percentage of a 180 cm male with a 90 cm waist and 40 cm neck using the US Navy circumference method.
How to use this tool
- Enter sex, height, neck circumference, waist circumference, hip circumference (women) and body weight (optional) in the fields above.
- Results update instantly as you type — or click Calculate.
- Read your body fat % and the full breakdown beneath it.
For a 180 cm man with a 90 cm waist, the Navy method provides a quick and surprisingly accurate body fat estimate without calipers.
Frequently asked questions
- How accurate is the Navy method?
- Studies put the margin of error at ±3–4% compared with DEXA. It is less accurate for very lean or very obese individuals.
- Where do I measure the waist?
- For men: at the navel. For women: at the narrowest point. Keep the tape level and breathe normally — don't suck in.