Body Fat Calculator Army
Calculate your body fat percentage using the U.S. Army method based on height, neck, waist, and hip (for women) measurements.
Published by:
isCalculator Editorial Team
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How to use this tool?
How to Use the Army Body Fat Calculator
This calculator estimates body fat percentage using the U.S. Army method. All measurements must be in inches.
- Select your gender – Male or Female. For females, an additional hip measurement field will appear.
- Enter your height – in inches (e.g., 70 for 5'10").
- Enter your neck circumference – measure just below the larynx, in inches.
- Enter your waist circumference – at navel level for males; at the narrowest point for females.
- If female, enter your hip circumference – at the widest point of the hips/buttocks.
- Click "Calculate Body Fat" – your estimated body fat percentage and the formula used will appear below.
Tip: Ensure all values are positive numbers. Invalid or missing inputs will show an error.
Previous Results
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Frequently Asked Questions
The U.S. Army uses circumference-based formulas to estimate body fat percentage. For males: 86.010 × log10(waist - neck) - 70.041 × log10(height) + 36.76. For females: 163.205 × log10(waist + hip - neck) - 97.684 × log10(height) - 78.387.
You need height (inches), neck circumference (inches), waist circumference (inches), and for females also hip circumference (inches). Measurements should be taken as per Army standards.
This calculator implements the official U.S. Army formula. However, it is an estimate; actual body fat may vary. For official assessment, consult a trained professional.
