1. What is a Body Fat Percentage Calculator?

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

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

2. How Does the Calculator Work?

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

Where:

• Sum Skinfolds — Sum of chest, abdominal, and thigh skinfold measurements in millimeters
• 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: Body fat percentage is a more accurate health indicator than BMI alone, helping assess fitness progress and health risks.

4. Using the Calculator

Tips:

• Take skinfold measurements with proper calipers
• Measure each site 2-3 times and average the results
• Enter the sum of chest, abdominal, and thigh measurements
• Input your current age (18-100 years)

5. Frequently Asked Questions (FAQ)

Q1: What sites are measured for the 3-site formula?
A: Chest, abdominal, and thigh skinfolds are measured for men (different sites are used for women).

Q2: How accurate is this method?
A: With proper technique, skinfold measurements are about 3-4% accurate compared to DEXA scans.

Q3: Can women use this calculator?
A: No, this uses the male formula. Women should use the Jackson-Pollock 3-site female formula with different measurement sites.

Q4: What's a healthy body fat percentage?
A: For men: 6-24% is typical (athletes 6-13%, fitness 14-17%, average 18-24%, obese 25%+).

Q5: How often should I measure?
A: Every 4-8 weeks to track changes, always at the same time of day under consistent conditions.