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Body Fat Percentage Formula (Without Neck):
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Body fat percentage is the proportion of fat to total body weight. This calculator estimates body fat using measurements without neck circumference, making it useful when neck measurement isn't available.
The calculator uses gender-specific formulas based on abdomen and hip measurements:
For Men:
\[ Body Fat = 86.010 \times \log_{10}(abdomen - hip) - 70.041 \times \log_{10}(height) + 36.76 \]For Women:
\[ Body Fat = 163.205 \times \log_{10}(abdomen + hip - height) - 97.684 \times \log_{10}(height) - 78.387 \]Where all measurements are in inches.
Details: Body fat percentage is a better health indicator than BMI alone, helping assess fitness level and health risks associated with obesity.
Tips: Measure circumference at the largest point for abdomen and hip. Stand straight and measure at the end of a normal breath for abdomen.
Q1: How accurate is this method?
A: While reasonably accurate for population averages, individual results may vary by ±3-5% compared to more precise methods.
Q2: What's a healthy body fat percentage?
A: For men: 8-19% (athletes), 20-24% (fitness), 25%+ (obese). For women: 21-33% (athletes), 24-30% (fitness), 31%+ (obese).
Q3: When should measurements be taken?
A: Morning before eating, with relaxed muscles and normal hydration for most consistent results.
Q4: Why no neck measurement?
A: This formula is useful when neck measurement isn't available, though formulas with neck measurement may be more accurate.
Q5: Can I use metric measurements?
A: The formula requires inches. Convert cm to inches by dividing by 2.54.