1. What is Body Fat Percentage?

Body fat percentage is the proportion of fat in your body compared to your total body weight. It's a more accurate indicator of health than body weight alone, as it distinguishes between fat mass and lean body mass.

2. How Does the Calculator Work?

The calculator uses the US Navy body fat formula for men:

Where:

• \( abdomen \) — Abdomen circumference at navel (cm)
• \( neck \) — Neck circumference (cm)
• \( height \) — Height (cm)

Explanation: The formula estimates body fat percentage based on circumference measurements and height, which correlate with body composition.

3. Importance of Body Fat Measurement

Details: Knowing your body fat percentage helps assess health risks, track fitness progress, and set appropriate weight management goals. Healthy ranges vary by age and gender.

4. Using the Calculator

Tips: Measure abdomen at navel level (relaxed, not sucked in) and neck just below the larynx. All measurements should be in centimeters. Ensure abdomen measurement is larger than neck measurement.

5. Frequently Asked Questions (FAQ)

Q1: How accurate is this method?
A: The Navy method is reasonably accurate (within 3-4%) for most people but may be less accurate for very lean or obese individuals.

Q2: What are healthy body fat ranges?
A: For men: Essential fat 2-5%, Athletes 6-13%, Fitness 14-17%, Average 18-24%, Obese 25%+.

Q3: When should measurements be taken?
A: Morning before eating is ideal, with consistent measurement conditions for tracking changes.

Q4: Are there female formulas?
A: Yes, the female formula includes additional measurements (hips and waist).

Q5: How often should I measure?
A: Every 4-8 weeks is sufficient to track meaningful changes in body composition.