Skinfold Body Fat Calculator (3-Site) — Fórmula
## Jackson-Pollock 3-Site Method (Male)
### Step 1: Body Density
**D = 1.10938 - 0.0008267 x S + 0.0000016 x S^2 - 0.0002574 x Age**
Where S = sum of chest + abdomen + thigh skinfolds in mm.
### Step 2: Siri Equation
**Body Fat % = (495 / D) - 450**
This converts body density to body fat percentage.
### Step 1: Body Density
**D = 1.10938 - 0.0008267 x S + 0.0000016 x S^2 - 0.0002574 x Age**
Where S = sum of chest + abdomen + thigh skinfolds in mm.
### Step 2: Siri Equation
**Body Fat % = (495 / D) - 450**
This converts body density to body fat percentage.
Ejemplo Resuelto
A 30-year-old male with chest 12mm, abdomen 20mm, thigh 15mm.
- Sum = 12 + 20 + 15 = 47 mm
- D = 1.10938 - 0.0008267 x 47 + 0.0000016 x 2209 - 0.0002574 x 30
- = 1.10938 - 0.03885 + 0.00354 - 0.00772 = 1.06635
- Body Fat = (495 / 1.06635) - 450 = 14.1%