1. What is the Jackson-Pollock Skinfold Method?

Definition: This calculator estimates body fat percentage using skinfold measurements at three sites (chest, abdominal, thigh) with gender-specific equations.

Purpose: It provides a practical, field-based method for assessing body composition without expensive equipment.

2. How Does the Calculator Work?

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

Where:

• Sum of Skinfolds — Chest + Abdominal + Thigh measurements (mm)
• Gender-specific coefficients — Different equations for males and females
• Age factor — Standardized to 25 years in this calculator

Explanation: The sum of skinfold measurements correlates with subcutaneous fat, which is used to estimate total body fat percentage.

3. Importance of Body Fat Measurement

Details: Body fat percentage is a key health indicator, helping assess fitness levels, health risks, and nutritional status more accurately than BMI alone.

4. Using the Calculator

Tips:

• Take measurements on the right side of the body
• Use proper skinfold calipers
• Take multiple measurements at each site and average them
• All skinfold values must be in millimeters (mm)

5. Frequently Asked Questions (FAQ)

Q1: How accurate is the skinfold method?
A: When performed correctly by a trained professional, it's about ±3-5% of more advanced methods like DEXA scans.

Q2: Why different formulas for men and women?
A: Fat distribution patterns differ by gender, requiring gender-specific equations for accurate estimation.

Q3: Can I use this if I'm very lean or obese?
A: The equations work best for average populations. Extremely lean or obese individuals may get less accurate results.

Q4: How often should I measure?
A: Every 4-8 weeks is sufficient to track changes, as body fat changes slowly.

Q5: What are healthy body fat ranges?
A: For men: 6-24%, Women: 16-30% (varies by age and fitness level).