Free Tool

Body Fat Calculator

Calculate your body fat percentage using the US Navy method.

Gender

Height (inches)

Neck circumference (inches)

Waist circumference (inches)

Measure at navel level

Weight (lbs) - optional

Your Results

Enter your measurements to calculate body fat

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What is the US Navy Body Fat Method?

The US Navy method uses circumference measurements to estimate body fat percentage. It's more accurate than BMI because it accounts for body composition, not just height and weight.

How to Measure

Neck: Measure just below the larynx (Adam's apple)
Waist: Measure at navel level for men, narrowest point for women
Hips (women): Measure at the widest point