Body Fat Percentage Calculator

What is Body Fat Percentage?

Body fat percentage is the proportion of your total body weight that comes from fat. It is a key indicator of overall health, fitness level, and body composition.

How is Body Fat Percentage Calculated?

The U.S. Navy method is one of the most widely used formulas to estimate body fat percentage:

• Formula:

  For Men: BF% = 86.010 × log10(Abdomen - Neck) - 70.041 × log10(Height) + 36.76
  For Women: BF% = 163.205 × log10(Waist + Hip - Neck) - 97.684 × log10(Height) - 78.387

Example Calculation for Men:

Height: 175 cm, Abdomen: 90 cm, Neck: 40 cm
BF% = 86.010 × log10(90 - 40) - 70.041 × log10(175) + 36.76
BF% ≈ 20.5

For women, ensure the hip measurement is included for accurate calculation.

Why is Body Fat Percentage Important?

• Health Indicator: A high body fat percentage increases the risk of various health issues.
• Fitness & Performance: Helps in goal setting and tracking fitness progress.
• Weight Management: Provides insights into lean mass vs. fat mass, making it more accurate than BMI.

Healthy Body Fat Ranges

• Essential Fat: 2–5% (Men), 10–13% (Women)
• Athletes: 6–13% (Men), 14–20% (Women)
• Fitness: 14–17% (Men), 21–24% (Women)
• Acceptable: 18–24% (Men), 25–31% (Women)
• Obese: 25%+ (Men), 32%+ (Women)