Training estimates

Army Body Fat Calculator

Calculate body fat percentage using the US Army method and check against Army fitness standards by age group. Use this Fitness and training tool to enter your numbers, review the result, and understand the key assumptions before making the next decision.

What you get
A focused calculator, clear explanation, common questions, and useful next tools.
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Result
Explanation
Common questions
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How this calculator works
The result depends on the numbers you enter and the assumptions shown below.

The US Army uses a circumference-based method to estimate body fat percentage as part of the Army Physical Fitness Test (APFT). The formula uses neck and waist measurements for men, and neck, waist, and hip measurements for women. Soldiers must meet the body fat standard for their age group to be considered in compliance.

Review the inputs carefully and treat the output as an estimate. For decisions involving money, taxes, health, law, or security, compare the result with trusted professional guidance when needed.

Frequently asked questions

What are the Army body fat standards?

For males: 20% (ages 17-20), 22% (21-27), 24% (28-39), 26% (40+). For females: 30% (17-20), 32% (21-27), 34% (28-39), 36% (40+).

How accurate is the Army formula?

It uses the US Navy circumference method which is accurate to within ±3-4%. Official measurements for Army purposes must be taken by trained personnel.

Can civilians use this calculator?

Yes. The formula is the same as the Navy body fat method and gives a valid body fat estimate for anyone.