Body Fat Percentage Formula:
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Definition: This calculator estimates the percentage of body weight that comes from fat based on fat mass and total body weight.
Purpose: It helps individuals and health professionals assess body composition and monitor fitness progress.
The calculator uses the formula:
Where:
Explanation: The fat mass is divided by total body weight to get the proportion of fat, then multiplied by 100 to convert to a percentage.
Details: Body fat percentage is a more accurate health indicator than BMI alone, helping assess fitness levels and potential health risks.
Tips: Enter your fat mass (from body composition analysis) and total body weight in kilograms. Both values must be > 0 and fat mass cannot exceed total weight.
Q1: How do I measure my fat mass?
A: Fat mass can be measured through methods like skinfold calipers, bioelectrical impedance scales, DEXA scans, or hydrostatic weighing.
Q2: What's a healthy body fat percentage?
A: For men, 6-24% is generally healthy; for women, 16-30%. Athletes typically have lower percentages.
Q3: Why use kg instead of pounds?
A: The calculator works with any unit as long as both measurements use the same unit, but kg is the standard in medical contexts.
Q4: Can I use this for body recomposition tracking?
A: Yes, tracking changes in body fat percentage over time helps monitor muscle gain and fat loss progress.
Q5: What if my fat mass equals total weight?
A: This would indicate 100% body fat, which is biologically impossible. There may be an error in your measurements.