Body Fat Percentage Calculator for Men

Body Fat Formula (Navy Method):

\[ \%Fat = 495 / (1.0324 - 0.19077 \times \log_{10}(waist - neck) + 0.15456 \times \log_{10}(height)) - 450 \]

Body Fat Percentage:

Definition: Body fat percentage is the proportion of fat to total body weight in males.

Purpose: It's a more accurate health indicator than BMI, helping assess fitness levels and health risks.

The calculator uses the US Navy body fat formula:

\[ \%Fat = 495 / (1.0324 - 0.19077 \times \log_{10}(waist - neck) + 0.15456 \times \log_{10}(height)) - 450 \]

Where:

Explanation: The formula estimates body fat based on circumference measurements and height.

Details: Healthy ranges are 6-24% for men. Higher percentages indicate obesity risks, while very low percentages may affect health.

Tips:

Q1: How accurate is this method?
A: The Navy method is about ±3% accurate compared to professional methods like DEXA scans.

Q2: What's a healthy body fat percentage?
A: For men: 6-13% (athletes), 14-17% (fitness), 18-24% (average), 25%+ (overweight).

Q3: Why not use BMI instead?
A: BMI doesn't distinguish between muscle and fat. Body fat percentage is more precise.

Q4: How often should I measure?
A: Every 4-8 weeks to track progress in fitness programs.

Q5: What if my waist is smaller than neck?
A: Double-check measurements. Waist should always be larger than neck in adult males.