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 fitness than body weight alone, as it distinguishes between fat mass and lean body mass.

2. How Does the Calculator Work?

The calculator uses the following equation specifically for women:

Where:

• \( waist \) — Waist circumference at narrowest point (cm)
• \( hip \) — Hip circumference at widest point (cm)
• \( neck \) — Neck circumference at narrowest point (cm)
• \( height \) — Height in centimeters

Explanation: This equation uses logarithmic transformations of body measurements to estimate body fat percentage based on US Navy research.

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: For accurate results, measure circumferences with a flexible tape measure while standing relaxed. Waist should be measured at the narrowest point, hips at the widest point, and neck just below the larynx.

5. Frequently Asked Questions (FAQ)

Q1: How accurate is this method?
A: This method provides a reasonable estimate (±3-4%) but may not be as accurate as DEXA scans or hydrostatic weighing.

Q2: What's a healthy body fat percentage for women?
A: Generally, 21-33% is considered healthy for women aged 20-40, with slightly higher ranges for older women.

Q3: When should measurements be taken?
A: For consistency, measure in the morning before eating and after using the bathroom. Avoid measuring right after exercise.

Q4: Are there limitations to this equation?
A: This method may be less accurate for very muscular individuals, pregnant women, or those with unusual body proportions.

Q5: How often should I measure my body fat?
A: Monthly measurements are sufficient to track trends, as daily fluctuations in water weight can affect results.