Developed by the US Department of Defense, the popular US Navy body fat formula uses height, and girth of neck and abdominal for males; and height and girth of neck, waist and hip for females to calculate body fat.

US Navy Tape Measurement Locations for Males

  • Neck: The neck tape measurement consists of the circumference of the neck, in the location immediately above the Adam’s apple.
  • Waist: The waist tape measurement consists of the circumference of the narrowest waist level, which is located midway between the lowest rib and the top of the hip bone.

US Navy Tape Measurement Locations for Females

  • Neck: The neck tape measurement consists of the circumference of the neck, in the location immediately above the Adam’s apple.
  • Waist: The waist tape measurement consists of the circumference of the narrowest waist level, which is located midway between the lowest rib and the top of the hip bone.
  • Hip: The hip tape measurement consists of the circumference of the waist at the level of the greatest protrusion of the gluteal muscles.

US Navy Body Fat Formula for Males

If you would like to calculate body fat using the US Navy method, and your test subject is a male, use the formula below.

Body Fat Percentage (%) = 86.010 x log10 (abdomen – neck) – 70.041 x log10 (height) + 36.76

US Navy Body Fat Formula for Females

If you would like to calculate body fat using the US Navy method, and your test subject is a female, use the formula below.

Body Fat Percentage (%) = 163.205 x log10 (waist + hip – neck) – 97.684 x log10 (height) – 78.387

US Navy Body Fat Formula on FatCaliper+

The free version of FatCaliper+ comes with the Jackson-Pollock 3 and BMI body fat formulas. The full version of FatCaliper+ also comes with advanced body fat formulas, including Jackson-Pollock 4, Jackson-Pollock 7, Durnin-Womersley, Yuhasz, Parillo, US Navy and the FatCaliper+ method. BMI is automatically calculated as part of all body fat measurement methods.