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Army Body Fat

Army Body Fat: calculated with the published clinical method, with result interpretation. A reference tool that does not replace a doctor's advice.

ℹ Reference calculation based on the published method. It does not replace a clinical examination or a doctor's decision.

Army Body Fat

Male sex (1 = yes)
Ageyears
Weightkg
Abdominal circumference at the navelcm
Body fat (US Army)
20.8%
US Army one-site formula (2023)AR 600-9 retention standards; the result is rounded to a whole percent for comparisonArmy Body Fat: calculated with the published clinical method, with result interpretation. A reference tool that does not replace a doctor's advice.
Maximum allowable
24%
Compliance with standard
Within standard

More about: Army Body Fat

What it calculates

The “Army Body Fat” calculator computes Body fat (US Army) in % from 4 parameters: male sex (1 = yes), age (years), weight (kg), abdominal circumference at the navel (cm).

Used by professionals and patients to assess health metrics, dosages, and risks.

Example calculation

With parameters Male sex (1 = yes) = 1, Age = 30 years, Weight = 80 kg, Abdominal circumference at the navel = 88 cm the result is 20.8 % (US Army one-site formula (2023)).

How to use

  1. Enter male sex (1 = yes), age, weight and abdominal circumference at the navel — each field above is adjustable with a slider.
  2. Body fat (US Army) (%) is calculated automatically as you type.
  3. Check the worked example below to see the formula applied to real numbers.
  4. Copy the result or bookmark this calculator.

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FAQ

How is BMI calculated?
BMI = weight (kg) / height (m)². Example: 70 kg / (1.75 m)² = 22.9. The WHO normal range is 18.5–24.9; below that is underweight, 25–29.9 is overweight, and 30+ is obese.
Is BMI accurate for everyone?
No. BMI does not distinguish muscle from fat, so athletes may show a high BMI with low body fat. It is also less reliable for teenagers, pregnant people, older adults, and very tall or short individuals.
What are the BMI categories?
Underweight: below 18.5. Normal: 18.5–24.9. Overweight: 25–29.9. Obese class I: 30–34.9; class II: 35–39.9; class III: 40+.
What is a better measure than BMI?
Body fat percentage, waist-to-height ratio (aim for under 0.5), and waist circumference give a clearer picture of health than BMI alone.

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