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Body Fat Calculator

Estimate your body fat percentage using the U.S. Navy circumference method, plus your fat mass, lean mass, and fitness category.

How to use Body Fat Calculator

  1. Pick your gender and units.
  2. Enter height, neck, and waist (and hip for women).
  3. See your estimated body fat percentage and category.

Frequently asked questions

How accurate is the Navy method?
It is a reasonable estimate from tape measurements but less precise than methods like DEXA. Measure consistently for the best comparison over time.

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