1. What is a Body Fat Calculator?

Definition: This calculator estimates body fat percentage based on body measurements using the U.S. Navy method.

Purpose: It helps individuals assess their body composition and monitor fitness progress.

2. How Does the Calculator Work?

The calculator uses the U.S. Navy body fat formula:

Where density is calculated differently for men and women based on circumference measurements.

Explanation: The formula uses neck, waist, and (for women) hip measurements along with height to estimate body fat percentage.

3. Importance of Body Fat Measurement

Details: Body fat percentage is a better health indicator than BMI alone, helping assess fitness level and health risks.

4. Using the Calculator

Tips: Measure circumferences at the correct locations (neck, natural waist, and widest hip for women). All measurements should be in centimeters.

5. Frequently Asked Questions (FAQ)

Q1: How accurate is this method?
A: The Navy method is reasonably accurate (±3%) for most people when measurements are taken correctly.

Q2: When should measurements be taken?
A: For consistency, measure in the morning before eating and after using the bathroom.

Q3: What's a healthy body fat percentage?
A: For men: 8-19% (athletes 6-13%). For women: 21-33% (athletes 14-20%).

Q4: Why is hip measurement only for women?
A: Women typically store more fat in hip/thigh areas, which the formula accounts for.

Q5: Can I use this calculator for children?
A: No, this calculator is designed for adults 18+ years old.