Body Fat Calculator

Understanding Body Fat Percentage

Body fat percentage is a key indicator of fitness and health that measures the proportion of fat tissue in your body compared to your total body mass. This calculator uses the U.S. Navy method, which is based on circumference measurements.

How is Body Fat Calculated?

The U.S. Navy method uses circumference measurements from specific body parts:

• Neck circumference
• Waist circumference (at naval level)
• Hip circumference (women only, at the widest point)

Why Measure Body Fat?

• Better indicator of fitness than BMI
• Helps track progress in fitness programs
• Identifies potential health risks
• Guides nutrition and exercise planning

Measurement Tips

• Measure in the morning before eating or drinking
• Keep the measuring tape snug but not tight
• Stand straight with relaxed muscles
• Take multiple measurements for accuracy

Limitations of the Method

While the U.S. Navy method is convenient and widely used, it has some limitations:

• May not be as accurate as DEXA scans or hydrostatic weighing
• Accuracy can vary based on body type and fat distribution
• Results may fluctuate with hydration levels
• Not suitable for pregnant women or children