1. What is the 3-Site Body Fat Measurement?

The 3-site skinfold measurement is a method to estimate body fat percentage using calipers to measure subcutaneous fat at three specific locations on the body. For men: chest, abdominal, and thigh. For women: triceps, suprailiac, and thigh.

2. How Does the Calculator Work?

The calculator uses the Jackson & Pollock formula to estimate body density from skinfold measurements, then converts to body fat percentage using the Siri equation:

Note: This calculator uses a standard age of 25 for calculation purposes.

3. Importance of Body Fat Measurement

Details: Body fat percentage provides a more accurate assessment of health than weight alone. It helps in monitoring fitness progress, assessing health risks, and designing appropriate nutrition and exercise programs.

4. Using the Calculator

Tips: Enter skinfold measurements in millimeters (mm) for all three sites. Ensure measurements are taken by a trained professional for accuracy. All values must be valid (greater than 0).

5. Frequently Asked Questions (FAQ)

Q1: How accurate is the 3-site skinfold method?
A: When performed by a trained professional, it can be within 3-5% of more advanced methods like DEXA scans.

Q2: What are healthy body fat percentages?
A: For men: 6-24% is generally healthy. For women: 16-30% is generally healthy, with athletic individuals typically at the lower end of these ranges.

Q3: When should measurements be taken?
A: Ideally in the morning before eating or drinking, and consistently at the same time of day for tracking changes.

Q4: Are there limitations to this method?
A: Less accurate for very lean or obese individuals, and results can vary based on the skill of the person taking measurements.

Q5: How often should I measure my body fat?
A: Every 4-8 weeks is sufficient to track meaningful changes, as daily fluctuations are normal.