1. What is the Navy Body Fat Formula?

The U.S. Navy body fat formula is a method used by the U.S. military to estimate body fat percentage based on circumference measurements. This calculator provides an approximation using just height and weight for general reference.

2. How Does the Calculator Work?

The standard Navy formulas are:

Since this calculator uses only height and weight, it provides an estimate based on BMI and demographic adjustments:

• \( height \) — Height in inches
• \( weight \) — Weight in pounds
• \( BMI \) — (weight / (height²)) × 703
• Different coefficients for men and women

Note: For most accurate results, actual circumference measurements should be used.

3. Importance of Body Fat Percentage

Details: Body fat percentage is a better indicator of fitness than weight alone. The Navy uses these standards to ensure personnel meet physical readiness requirements.

4. Using the Calculator

Tips: Enter height in inches and weight in pounds. For best results, measure height without shoes and weight in minimal clothing.

5. Frequently Asked Questions (FAQ)

Q1: How accurate is this height/weight only version?
A: It provides a reasonable estimate but may differ by ±3-5% from actual circumference measurements.

Q2: What are Navy body fat standards?
A: For men 18-21: max 22%, 22-29: max 23%. For women 18-21: max 33%, 22-29: max 34%.

Q3: Why does the Navy measure body fat?
A: To maintain operational readiness and ensure personnel meet physical fitness standards.

Q4: How often should I measure body fat?
A: For fitness tracking, monthly measurements are sufficient to see meaningful changes.

Q5: Can I use this if I'm not in the military?
A: Yes, it's a valid method for anyone, though other methods like DEXA scans may be more accurate.