Navy Body Fat Calculator
Calculate your body fat percentage using the US Navy circumference method, a widely used and validated formula.
Important Health Disclaimer
This calculator provides general health information based on standard medical formulas and WHO guidelines. Results are for informational and educational purposes only and should not be considered as professional medical advice, diagnosis, or treatment recommendations.
For health concerns, medical conditions, fitness plans, or dietary decisions, please consult with qualified healthcare professionals, licensed physicians, registered dietitians, or certified fitness trainers who can evaluate your individual health status and medical history.
Individual health needs vary significantly. These calculations are general estimates and may not be appropriate for everyone, especially those with existing medical conditions, pregnant women, children, or elderly individuals.
Not a substitute for professional medical advice
Measurements
Measure at navel level
Measure below the larynx
Measurement Tips
- • Use a flexible measuring tape
- • Measure directly on skin or thin clothing
- • Stand relaxed, do not suck in stomach
- • Keep tape level and snug (not tight)
- • Take multiple measurements for accuracy
Body Fat Percentage
Body Fat Categories
About the Navy Method
The US Navy body fat formula was developed by Hodgdon and Beckett at the Naval Health Research Center. It uses circumference measurements to estimate body fat percentage with reasonable accuracy (within 3-4% of more precise methods like hydrostatic weighing).
Formula Used
BF% = 495 / (1.0324 - 0.19077 * log10(waist - neck) + 0.15456 * log10(height)) - 450
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