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Body Fat % US Navy Circumference Calculator

US Navy body fat formula from neck, waist, and hip measurements.

Estimates body fat percentage using the US Navy circumference method from waist, neck, (hip for women), and height measurements.

Nadia Almasri By Nadia Almasri
Published Last reviewed 1 min read

Inputs

Results

Enter values and click Calculate to see results.
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How to use this calculator

  1. Fill in the inputs above using the units you already have.
  2. Values update automatically as you type — no submit button needed.
  3. Hover any result row for the underlying formula and intermediate values.

Formula

BF%_m = 86.01×log10(waist−neck) − 70.041×log10(height) + 36.76

In depth

Estimates body fat percentage using the US Navy circumference method from waist, neck, (hip for women), and height measurements.