Home Back

Army Tape Calculator 2021

Army Body Fat Formula (2021 Pre-Update):

\[ \text{Body Fat \%} = 86.010 \times \log_{10}(\text{abdomen} - \text{neck}) - 70.041 \times \log_{10}(\text{height}) + 36.76 \]

inches
inches
inches

Unit Converter ▲

Unit Converter ▼

From: To:

1. What is the Army Tape Calculator?

The Army Tape Calculator uses the 2021 pre-update formula to estimate body fat percentage based on abdomen and neck circumference measurements along with height. This method provides a practical way to assess body composition for military personnel.

2. How Does the Calculator Work?

The calculator uses the Army body fat formula:

\[ \text{Body Fat \%} = 86.010 \times \log_{10}(\text{abdomen} - \text{neck}) - 70.041 \times \log_{10}(\text{height}) + 36.76 \]

Where:

Explanation: This formula estimates body fat percentage based on circumference measurements, with adjustments for height.

3. Importance of Body Fat Measurement

Details: Body fat percentage is a critical measurement in the military for assessing physical fitness and ensuring personnel meet health and readiness standards.

4. Using the Calculator

Tips: Enter abdomen and neck circumference in inches, height in inches. All values must be valid (abdomen > neck > 0, height > 0).

5. Frequently Asked Questions (FAQ)

Q1: How accurate is the tape method?
A: The tape method provides a reasonable estimate but may not be as accurate as more advanced methods like DEXA scans or hydrostatic weighing.

Q2: What are the Army body fat standards?
A: Standards vary by age and gender, but generally range from 18-26% for males and 26-36% for females.

Q3: How should measurements be taken?
A: Measurements should be taken with a flexible tape measure, with the person standing relaxed. Abdomen is measured at the navel level, neck at the midpoint.

Q4: Are there limitations to this method?
A: This method may be less accurate for individuals with unusual body shapes, significant muscle mass, or those who are extremely overweight or underweight.

Q5: Has the formula been updated?
A: Yes, the Army has updated its body fat calculation formula. This calculator uses the 2021 pre-update version.

Army Tape Calculator 2021© - All Rights Reserved 2025