Body Fat Calculator
Estimate your body fat percentage using the US Navy tape measure method.
—%
Enter measurements
Body Fat Categories (Men)
Your Body Fat
%
How to Measure
- Waist: Measure at navel level, relaxed
- Neck: Measure at the narrowest point
US Navy Method
The US Navy body fat formula uses tape measurements to estimate body fat with ±3-4% accuracy of DEXA scans.
"No expensive equipment needed - just a tape measure."
The Formula
Men: %BF = 86.010 × log₁₀(waist - neck) − 70.041 × log₁₀(height) + 36.76
Women: %BF = 163.205 × log₁₀(waist + hip − neck) − 97.684 × log₁₀(height) − 78.387
Disclaimer: This calculator provides estimates for informational purposes only. Body fat percentage can vary based on hydration, time of day, and measurement technique. Consult a healthcare professional before making health decisions.
SponsoredAbout the Body Fat Calculator
This body fat calculator estimates health and fitness metrics from your personal inputs. Estimate body fat using the US Navy tape measure method.
Use for personal wellness tracking and education. Consult a healthcare provider for medical advice.
Adjust the inputs above to model your specific scenario with the Body Fat Calculator.
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