Navy Body Fat Calculator
Circumference-based body fat estimate used in fitness screening contexts.
Use the calculator below, then review the formula, a numeric example, and the reference table to understand how the navy body fat estimator result is produced.
Educational tool only. It does not replace advice from a licensed clinician, dietitian, or exercise physiologist.
Calculator inputs
Result
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What is this calculator?
Circumference-based body fat estimate used in fitness screening contexts. The formula, a worked example, and a reference table are below. Results are for education only, not medical advice.
How it works
Logarithmic U.S. Navy circumference model: uses neck, waist, height (and hip for women) in cm per standardized tape protocol.
Example
Male: height 178 cm, neck 38 cm, waist 86 cm page computes Navy estimate from log10 terms.
Reference Table
| Value | Meaning |
|---|---|
| Neck | Below larynx, perpendicular |
| Waist | At narrowest or per protocol |
| Female hip | Required for female mode here |
FAQ
Military standards?
This is an educational estimate; official screening follows service rules.
Posture?
Slouching changes circumference; stand naturally.
Why Navy method?
Widely published for fitness testing contexts.
Compare to BMI?
Yes—multiple screens reduce single-method bias.