Body Fat Calculator
Estimate body fat percentage with the U.S. Navy method and see estimated fat and lean mass.
Estimated result
Enter positive measurements and check that waist, neck, hip, and height form a possible combination.
U.S. Navy method
The equation combines height with waist, neck, and, where required, hip circumference. Measure at consistent landmarks.
Why results vary
Tape angle and tension affect results. A repeatable protocol matters more than inconsistent comparisons.
Frequently asked questions
Is this a clinical measurement?
No. It is an anthropometric estimate based on circumferences.
Is personal data sent to a server?
No. Calculations run locally in your browser and these values are not stored by default.
Can I use the result as medical advice?
No. It is an educational reference and does not replace individual assessment.
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