Body Fat Percentage Calculator
Estimate body fat percentage using the U.S. Navy circumference method - measure with a flexible tape in centimeters.
This tool is for general informational purposes only and is not medical advice. It does not diagnose, treat, or replace consultation with a qualified healthcare provider.
What this tool does
Estimate body fat percentage using the U.S. Navy circumference method - measure with a flexible tape in centimeters.
Formula used
U.S. Navy circumference method, which estimates body fat from waist, neck, height (and hip for women) using logarithmic regression against measured body density. It is a field estimate, not a lab measurement like DEXA or hydrostatic weighing.
Frequently asked questions
How accurate is the Navy method?
It is generally within a few percentage points of more precise lab methods for most body types, but is less reliable for very lean or very muscular individuals.
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