1. What is a Body Fat Percentage Calculator?

Definition: This calculator estimates body fat percentage using skinfold measurements based on the Jackson-Pollock method.

Purpose: It helps fitness professionals and individuals track body composition changes and health metrics.

2. How Does the Calculator Work?

The calculator uses the Jackson-Pollock 3-site formula:

Where:

• sum — Total of chest, abdominal, and thigh skinfold measurements (mm)
• age — Individual's age in years

Explanation: The formula uses logarithmic transformations of skinfold measurements to estimate body density, which is then converted to body fat percentage.

3. Importance of Body Fat Measurement

Details: Body fat percentage is a more accurate health indicator than BMI alone, helping assess fitness progress and health risks.

4. Using the Calculator

Tips:

• Use proper calipers and measurement techniques
• Measure on the right side of the body
• Take measurements in the morning before eating
• Be consistent with measurement locations

5. Frequently Asked Questions (FAQ)

Q1: How accurate are skinfold measurements?
A: When performed correctly by an experienced tester, they can be within 3-5% of more advanced methods.

Q2: What's a healthy body fat percentage?
A: For men: 8-19% (athletes 6-13%), For women: 21-33% (athletes 14-20%).

Q3: Can I use different measurement sites?
A: Yes, but you'll need to use the appropriate formula for those sites (e.g., 7-site or 4-site methods).

Q4: How often should I measure?
A: Every 4-8 weeks to track changes, as daily fluctuations are normal.

Q5: Why does age factor into the calculation?
A: Body composition changes with age, and formulas account for these physiological differences.