Home
Back
Body Fat Formula:
| From: | To: |
Body fat calculation using skinfold measurements is a method to estimate body fat percentage based on measurements of subcutaneous fat at specific sites on the body. This method uses calipers to measure skinfold thickness and applies mathematical formulas to estimate overall body fat percentage.
The calculator uses the following formulas:
Where:
Explanation: The equation calculates body density first, then converts it to body fat percentage using the Siri equation.
Details: Body fat percentage is a more accurate indicator of health and fitness than body weight alone. It helps assess health risks, track fitness progress, and design appropriate nutrition and exercise programs.
Tips: Enter the sum of skinfold measurements in millimeters, age in years. All values must be valid (sum > 0, age between 1-120). This calculator uses the formula specifically for males.
Q1: What skinfold sites should be measured?
A: Common sites include chest, abdomen, and thigh for males; triceps, suprailiac, and thigh for females. The specific sites depend on the formula being used.
Q2: How accurate is the skinfold method?
A: When performed by a trained professional, skinfold measurements can be within 3-4% of actual body fat percentage. Accuracy depends on proper technique and consistent measurement sites.
Q3: What are healthy body fat percentages?
A: For men: 6-24% is generally considered healthy. For women: 16-30% is generally considered healthy. These ranges vary by age and fitness level.
Q4: How often should measurements be taken?
A: For tracking progress, measurements every 4-8 weeks are sufficient, as significant changes in body fat take time to occur.
Q5: Are there limitations to this method?
A: This method may be less accurate for extremely obese individuals, elderly people, or those with very loose skin. It also requires consistent measurement technique for reliable results.