1. What is a Body Fat Percentage Calculator?

Definition: This calculator estimates body fat percentage using skinfold measurements and age based on the Jackson-Pollock 3-site formula.

Purpose: It helps fitness professionals and individuals monitor body composition changes during training or weight management programs.

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 (18-100)

Explanation: The formula accounts for the nonlinear relationship between skinfold thickness and body fat percentage, with age as a modifying factor.

3. Importance of Body Fat Measurement

Details: Tracking body fat percentage provides better health insight than weight alone, helping assess fitness progress and health risks.

4. Using the Calculator

Tips:

• Measure skinfolds with proper calipers
• Take measurements on the right side of the body
• Ensure consistent measurement locations
• Average multiple measurements for accuracy

5. Frequently Asked Questions (FAQ)

Q1: Which skinfold sites are used?
A: This calculator uses the sum of chest, abdominal, and thigh measurements (3-site Jackson-Pollock method).

Q2: How accurate is this method?
A: Skinfold measurements typically have ±3-5% accuracy when performed by trained professionals.

Q3: Can I use this for athletes?
A: Yes, but some athletes may need sport-specific formulas due to different fat distribution patterns.

Q4: Why does age affect the calculation?
A: Fat distribution and skin elasticity change with age, affecting the skinfold-to-fat relationship.

Q5: What's a healthy body fat percentage?
A: For men: 8-19% (athletes 6-13%), women: 21-33% (athletes 14-20%). Varies by age and individual factors.