Body Fat % (Body Fat Percentage) Calculator
Estimate body-fat percentage with the US Navy method.
Input Data
Results
At a glance:Estimate body-fat percentage with the US Navy method.
Formula
Male: %BF = 495 ÷ (1.0324 − 0.19077·log10(waist−neck) + 0.15456·log10(height)) − 450.
Female: replace waist−neck with waist+hip−neck.
How to Use
- Select sex, then enter height, waist, neck (and hip for females).
- The calculator returns body-fat percentage.
FAQ
How accurate is it?
It is an estimate, not a medical measurement like DXA or hydrostatic weighing; use it for trend tracking.
How does it differ from BMI?
BMI uses only height and weight and cannot tell muscle from fat; this method estimates the fat proportion directly.
Where is it applied?
Fitness and body-composition tracking, and rough health screening.
How precise is it?
The result is rounded to one decimal place; individual variation exists.
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References
Content review: Calculatorism Science Team. Results are for reference only; please refer to the relevant authorities for the official figures.