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Body Fat Percentage Formula:
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Body fat percentage is the total mass of fat divided by total body mass, multiplied by 100. It is a more accurate indicator of health than BMI alone, as it distinguishes between fat mass and lean body mass.
The calculator uses the following formula:
Where:
Explanation: This formula estimates body fat percentage using BMI, age, and gender as predictors. It provides a quick estimation but may not be as accurate as more direct measurement methods.
Details: Knowing your body fat percentage helps assess health risks associated with both high and low body fat levels. It's particularly useful for tracking fitness progress and setting appropriate health goals.
Tips: Enter your BMI value (calculated as weight in kg divided by height in meters squared), age in years, and select your gender. All values must be valid (BMI > 0, age between 1-120).
Q1: How accurate is this estimation method?
A: This formula provides a reasonable estimation for most people but may not be as accurate as methods like DEXA scans or hydrostatic weighing, especially for athletes or those with unusual body compositions.
Q2: What are healthy body fat percentage ranges?
A: For men: 6-24% is generally healthy; For women: 16-30% is generally healthy. These ranges vary by age and fitness level.
Q3: Why does the formula include gender?
A: Women naturally have higher essential body fat percentages than men due to reproductive and hormonal differences.
Q4: Can I use this if I'm pregnant?
A: This formula is not recommended for use during pregnancy as body composition changes significantly during this period.
Q5: How often should I measure my body fat percentage?
A: For tracking changes, monthly measurements are typically sufficient as daily fluctuations are normal and not indicative of true changes.