Body fat calculator

Estimate your body fat percentage from a few tape-measure readings.

How it works

The US Navy method estimates body fat from height and the circumference of your neck and waist (plus hips for women). Its typical error is around 3–4%, similar to many bioimpedance scales.

Measure your waist at the navel, your neck just below the Adam’s apple and your hips at their widest, without pulling the tape tight.

Frequently asked questions

What body fat percentage is healthy?

As a guide, 14–24% for men and 21–31% for women.

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