yCalculator

Army Body Fat Calculator

Last updated: April 2026

Unit system

Sex

in
in
in

Measurements should be taken in a relaxed state using a flexible tape measure.

Body fat

17.5%

Fitness

Measurements used

height70 in
neck15 in
waist34 in

Warning note

This is an estimate based on circumference measurements. Results may differ from medical-grade body composition tests.

Related calculators:

  • Body Fat Percentage Calculator
  • BMI Calculator
  • Lean Body Mass Calculator
  • Ideal Weight Calculator

What is the Army body fat method?

The Army body fat method estimates body fat percentage using circumference measurements and a log-based formula.

How is Army body fat calculated?

Men use height, neck, and waist. Women use height, neck, waist, and hips. All measurements are converted to inches before calculation.

How to measure correctly

Measure the neck below the larynx, the waist at navel level, and hips at the widest part for women.

Army vs Navy body fat methods

Army and Navy circumference formulas are similar, but they are used in different standards and contexts.

Limitations

This method is not as accurate as DEXA or lab testing and depends heavily on measurement accuracy.

What does this mean?

This calculator is designed to help you understand the likely number before you make a decision or start an application.

Your result should be checked against official UK guidance, especially if your circumstances include dependants, exemptions, prior leave, or a complex immigration history.

Treat the figure as a planning tool rather than legal advice. Where the answer affects an application deadline or major payment, speak to an authorised adviser.

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