Army Body Fat Calculator
Calculate body fat percentage using the US Army body fat formula.
Body Measurements
Body Fat Result
Body Fat Percentage
24.3
percent (%)
Category
Above Average
Healthy Ranges:
Athletic: <8%
Good: 8-14%
Average: 14-18%
Above Avg: 18-25%
About This Calculator
The Army Body Fat Calculator uses the US Army body fat formula to estimate your body fat percentage based on measurements of your neck, waist, hip (for women), and height. This method is commonly used for military fitness assessments and provides a quick estimate without specialized equipment.
The Army body fat formula uses logarithmic calculations based on circumference measurements. It's important to take measurements accurately - measure at the narrowest point for neck, at the navel for waist, and at the widest point for hips (women only).
Formula & Calculation Method
US Army Body Fat Formula:
For Men:
Body Fat % = 86.010 × log₁₀(waist - neck) - 70.041 × log₁₀(height) + 36.76
For Women:
Body Fat % = 163.205 × log₁₀(waist + hip - neck) - 97.684 × log₁₀(height) - 78.387
Measurements should be in centimeters. The formula uses logarithmic calculations to account for the relationship between body measurements and body composition. This method is validated for military personnel and provides reasonable estimates for the general population.
How to Use This Calculator
- Enter Age: Input your age in years.
- Select Gender: Choose your biological sex (affects formula used).
- Measure Neck: Measure at the narrowest point, just below the larynx.
- Measure Waist: Measure at the navel level, relaxed (not sucked in).
- Measure Hips (Women only): Measure at the widest point of the hips.
- Enter Height: Input your height in centimeters.
- View Results: See your estimated body fat percentage and category.
Frequently Asked Questions
How accurate is the Army body fat formula?
The Army body fat formula provides reasonable estimates for most people, especially those with average to athletic builds. It may be less accurate for very muscular individuals or those with unusual body proportions. For precise measurements, DEXA scans or hydrostatic weighing are more accurate.
What are healthy body fat percentages?
For men: 8-19% is considered healthy, with 8-14% being ideal. For women: 16-25% is considered healthy, with 16-20% being ideal. These ranges vary by age and individual factors.
How should I take measurements?
Use a flexible measuring tape. Neck: at the narrowest point, just below the larynx. Waist: at the navel level, relaxed. Hips (women): at the widest point. Take measurements in the morning before eating, and ensure the tape is level and snug but not tight.
Can I use this for military fitness standards?
This calculator uses the standard Army body fat formula, but actual military fitness standards may vary by branch and include additional factors. Always refer to official military regulations for official assessments.
Expert Reviewed
This calculator was reviewed by NumCalculators Editorial Team, Multi-disciplinary Expert Team