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Body Fat Calculator

Estimate body fat percentage from a few tape-measure numbers, using the U.S. Navy method.

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Body fat
U.S. Navy method (estimate).

How to use the Body Fat Calculator

  1. Select your sex.
  2. Enter waist, neck, and height in centimeters (hip is added for women).
  3. Read your estimated body fat percentage.

Frequently asked questions

How accurate is this method?

The U.S. Navy circumference method is a reasonable estimate for most people, typically within a few percentage points of more precise methods like DEXA scans.