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Army Body Fat Calculator.

Calculate your body fat percentage using the official US Army circumference method.

FREE INSTANT RESULTS NO SIGNUP UPDATED 2026

Parameters

in
in
in
in

Summary Output

Army Body Fat %
14.5%%

How to Use

Input height, neck, waist (and hips for females). Follow standard military measuring guidelines.

Example Calculation

A 70 in male with a 15 in neck and 34 in waist has approximately 14.5% body fat.

Formula

Male = 86.010 * log10(waist - neck) - 70.041 * log10(height) + 36.76
Female = 161.278 * log10(waist + hip - neck) - 139.2 * log10(height) + 22.09

Frequently Asked Questions

Common questions and answers about the Army Body Fat Calculator.

The Army Body Fat Calculator is a free online tool designed to calculate your body fat percentage using the official us army circumference method. It allows you to perform these calculations quickly and accurately without manual computations.
Input height, neck, waist (and hips for females). Follow standard military measuring guidelines. Once you enter these values, the calculator will automatically compute and display the results instantly.
The Army Body Fat Calculator uses the following formula to calculate your results: Male = 86.010 * log10(waist - neck) - 70.041 * log10(height) + 36.76 Female = 161.278 * log10(waist + hip - neck) - 139.2 * log10(height) + 22.09 This formula is standard and widely accepted for these types of calculations.
Sure! Here is a practical example: A 70 in male with a 15 in neck and 34 in waist has approximately 14.5% body fat. This example demonstrates how the inputs are processed through the formula to yield the final results.
To use the Army Body Fat Calculator, you need to enter: Gender, Height, Neck Circumference, Waist Circumference, Hip Circumference (Females Only). These inputs help the tool calculate precise results tailored to your situation.
The Army Body Fat Calculator outputs the following details: Army Body Fat %. This comprehensive breakdown helps you understand the different aspects of the calculated figures.
Yes, the Army Body Fat Calculator is 100% free with no registration or signup required. It is fully responsive and optimized for mobile phones, tablets, and desktop computers.
Reliable Calculator provides a fast, clean, ad-free, and premium user experience. The Army Body Fat Calculator uses verified math formulas and provides instant results with visual breakdowns and examples, making it more intuitive than other tools.