Body measurements Health Calculators

Navy Body Fat Calculator

Navy Body Fat Calculator

One of the best methods of estimating the fat content of a person’s body was developed by US Navy and it calculates body fat with good precision. This parameter is determined for all service members of the US Navy since they are required to meet certain percent body fat (%BF) standards as a condition of military service. Read on to understand the equation and to check if you could join the naval forces.

This Body Fat Navy Calculator uses the U.S. Navy fitness formula to get an estimated measuring of body fat percent. Use a tape measure then enter your waist, hip, and neck measurements. Combine these measurements with your gender and height and this navy calculator will estimate body fat percent, lean mass, fat mass, and your general navy fitness category. (You can see the Navy Body Fat Chart by clicking the down arrow icon right under the results.) The water displacement test is the most accurate way to determine body fat percent, but the Navy Body Fat test or YMCA formula is accurate within 1-3% for most people.

What formula does the US Navy body fat calculator use?

The equation was developed at the Naval Health Research Center (NHRC), San Diego, California.

For men:

%BF = 495 / ( 1.0324 – 0.19077 * log10( waist – neck ) + 0.15456 * log10( height ) ) – 450

For women:

%BF = 495 / ( 1.29579 – 0.35004 * log10( waist + hip – neck ) + 0.22100 * log10( height ) ) – 450

Please note that the formulas presented above are for measurements in metric units.

The US Navy body fat standards

The limit of body fat percentage for US Navy service members:

  • Age 18 to 21 – 22% for males, 33% for females;
  • Age 22 to 29 – 23% for males, 34% for females;
  • Age 30 to 39 – 24% for males, 35% for females;
  • Age over 40 – 26% for males, 36% for females.

Body fat percentage plays an important role in distinguishing between a healthy and an obese individual, as it has a greater ability to differentiate between lean mass and fat mass compared to BMI.

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