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The US Navy method uses body circumference measurements to estimate body fat percentage. For men, it uses waist and neck measurements. For women, it also includes hip measurement. This is a practical alternative to skinfold calipers or DEXA scans and provides a reasonable estimate for most adults.
Review the inputs carefully and treat the output as an estimate. For decisions involving money, taxes, health, law, or security, compare the result with trusted professional guidance when needed.
How accurate is the Navy method?
The US Navy method has an accuracy of approximately ±3-4% when measurements are taken correctly. It is less accurate than DEXA scans but a practical field measurement.
Where should I measure my waist?
Measure your waist at the narrowest point, typically around the navel level, while breathing normally.
What is a healthy body fat percentage?
For men, fitness range is 14-17% and athlete range is 6-13%. For women, fitness range is 21-24% and athlete range is 14-20%.
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