Estimate body-fat percentage from height and circumference measurements using the U.S. Navy method.
Change the inputs that matter to your decision. Optional assumptions stay collapsed until you need them.
Use the same unit system for every circumference. Measure without pulling the tape tight.
Athletes range. This circumference-based estimate is sensitive to measurement technique and is not a clinical diagnosis.
Measure the neck below the larynx and the waist at the narrowest or specified site, consistently each time.
Age is collected for context but is not used by this legacy Navy equation. Compare repeated measurements under similar conditions.
Practical notes about the inputs, assumptions, and result.
Use consistent sites and conditions, keep the tape level, and avoid compressing the tissue. The exact site convention should match the method being used.
No. It is a circumference-based estimate and can differ from imaging, skinfold, or other methods.
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