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Navy Body Fat Calculator

Estimate body fat with the U.S. Navy method.

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How it works

Fill in the 5 fields above and Navy Body Fat Calculator calculates the result instantly, recalculating as you change any value. The math runs locally in your browser — nothing is sent to a server.

Examples

  • Waist 34 in, Neck 15 in, Hip (women) 38 in → Body fat: 11.05%

Frequently asked questions

How do I use the Navy Body Fat Calculator?

Enter your values in the 5 input fields and the result is calculated automatically as you type. Change any value to see the numbers update instantly.

Is my data private?

Yes. The Navy Body Fat Calculator runs entirely in your browser. Nothing you enter is uploaded, saved to a server, or shared — it never leaves your device.

Is the Navy Body Fat Calculator free?

Yes, it is completely free with no sign-up, no limits and no watermarks. Like every tool on health & fitness and the rest of the platform, you can use it as often as you like.

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