Army Body Fat Calculator

Army body fat calculator estimates your body composition percentage using the official AR 600-9 tape test method. Male standards range from 20% (ages 17-20) to 26% (ages 40+), while female standards range from 30% to 36%. Enter your height, neck, and waist measurements to check if you meet Army body composition standards.

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Formula

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Core Formula
Male: BF% = 86.010 x log10(waist - neck) - 70.041 x log10(height) + 36.76Female: BF% = 163.205 x log10(waist + hip - neck) - 97.684 x log10(height) - 78.387Result compared against AR 600-9 age and gender standards

How it works: The Army uses a DoD circumference-based formula from AR 600-9. For males, it uses neck and waist measurements with height. For females, it adds hip circumference. The result is compared against age-based maximum standards.

Worked Example

Male soldier: Height 70 inches. Weight 190 lbs. Neck 15.5 inches. Waist 34 inches.
1Step 1: Calculate (waist - neck) = 34 - 15.5 = 18.5 inches.
2Step 2: log10(18.5) = 1.267.
3Step 3: log10(70) = 1.845.
4Step 4: Body Fat % = 86.010 x 1.267 - 70.041 x 1.845 + 36.76 = approximately 18.2%.
5Step 5: Compare to standard: male age 25 maximum is 22%. Result: 18.2% passes (3.8% under the limit).

How the Army Body Composition Program Works

The Army Body Composition Program uses circumference-based measurements to estimate body fat percentage. Soldiers who exceed weight screening standards are taped to determine if they meet body fat requirements.

  • The tape test measures neck and waist circumference for males, and neck, waist, and hip circumference for females
  • Measurements are plugged into a logarithmic formula along with height to estimate body fat percentage
  • Male body fat standards range from 20% to 26% depending on age group, and female standards range from 30% to 36%
  • Soldiers who fail both weight screening and the tape test are enrolled in the Army Body Composition Program for remediation

This calculator uses the male formula by default. For accurate results, take measurements at the same time of day and follow official measurement site guidelines.

You can also calculate changes using our ACFT Calculator, Army ACFT Calculator, APFT Calculator or Army Promotion Points Calculator.

Frequently Asked Questions

Do I need a hip measurement?

Hip measurement is required for the female formula. This tool uses the male formula by default. For the female calculation, hip circumference is measured at the widest point of the buttocks.

Is this an official body fat determination?

No. This is an estimate for personal tracking and planning. Official tape tests must be administered by trained personnel following AR 600-9 procedures.

What body fat percentage does the Army allow?

Standards vary by age group. For males ages 17 to 20, the maximum is 20%. Ages 21 to 27 allow 22%. Ages 28 to 39 allow 24%. Ages 40 and above allow 26%. Female standards are approximately 10 percentage points higher.

How can I improve my tape test results?

Reducing waist circumference through cardiovascular exercise and nutrition has the largest impact. Building neck muscle through resistance training also improves your ratio.

What happens if I fail the Army tape test?

Soldiers who fail both weight screening and the tape test are enrolled in the Army Body Composition Program (ABCP) with monthly counseling. You have 6 months to meet standards. Two consecutive failures can lead to separation processing.

When does the Army perform body composition assessments?

Body composition is assessed during ACFT record tests (at least twice per year), unit weigh-ins, and as part of the promotion process. Soldiers who exceed the weight screening table for their height are automatically taped.

Can I use this Army Body Fat Calculator on my own web page?

You can. Look for the "Embed" button near the top of this calculator. It lets you pick a size, border style, and color palette, then gives you an iframe tag to paste into any webpage. The widget is responsive, loads fast, and costs nothing. More details at calculory.com/services/embed-calculators.

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