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Body Fat Calculator
Estimate body fat % with the US Navy method (tape measure only).
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Gender
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Body Fat %
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Category
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How to use the Body Fat Calculator
Measure waist, neck (and hips for women) and height with a tape, enter in inches — the US Navy formula estimates body fat %.
Frequently Asked Questions
Within ~3–4% of DEXA scans for most people — good for tracking trends, not lab precision.
At the navel, relaxed — not sucked in. Consistency matters more than perfection.