Fat Percentage Calculator for Men

Male Body Fat Formula:

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

Body Fat Percentage:

Definition: This calculator estimates body fat percentage using the US Navy method based on waist, neck, and height measurements.

Purpose: It helps men assess their body composition and fitness level more accurately than BMI alone.

The calculator uses the US Navy body fat formula for men:

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

Where:

Explanation: The formula correlates circumference measurements with body fat percentage through empirical research.

Details: Unlike BMI, body fat percentage distinguishes between fat and muscle mass, providing a better health indicator.

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 for men?
A: 6-24% is typical: Athletes 6-13%, Fitness 14-17%, Average 18-24%, Obese 25%+.

Q3: Why doesn't it ask for weight?
A: The Navy formula uses circumferences rather than weight to avoid muscle mass skewing results.

Q4: Can women use this calculator?
A: No, women should use the female-specific formula which includes hip measurement.

Q5: When is the best time to measure?
A: Morning before eating, as food and hydration can temporarily affect measurements.