Formula and method
This calculator uses the values you enter and applies the calculation immediately in your browser. The main output formulas are:
- Body fat (men):
(() => { if(waist<=neck) return NaN; const value=495/(1.0324-0.19077*Math.log10((waist-neck)/2.54)+0.15456*Math.log10(height/2.54))-450; return value>=0 && value<=100 ? value : NaN; })()
Some formulas are undefined for certain input combinations, such as division by zero, equal x-values in a slope calculation, or logarithms of non-positive numbers. In those cases the live tool reports that the result is undefined instead of displaying Infinity or NaN.
Examples
- Example: with Waist = 85 cm, Neck = 38 cm, Height = 178 cm, this calculator returns Body fat (men) = 10.1 %.
- Share this page with a clean URL: https://specwhale.com/tools/body-fat-navy-calculator/
- Try related health & fitness tools when your next step needs another conversion or calculation.
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Frequently asked questions
Is Body Fat Calculator (US Navy Method) free to use?
Yes. Body Fat Calculator (US Navy Method) is completely free, has no usage limit, and does not require an account, email, or API key.
Does Body Fat Calculator (US Navy Method) store or upload my data?
No. Body Fat Calculator (US Navy Method) calculates everything locally in your browser. Nothing you type is sent to a server or stored by SpecWhale.
How accurate is Body Fat Calculator (US Navy Method)?
Body Fat Calculator (US Navy Method) uses a standard formula (see the Method section above for the exact expression). For high-stakes financial, medical, or legal decisions, confirm the result with a professional or an authoritative source before relying on it.
Can I embed Body Fat Calculator (US Navy Method) on my own website?
Yes. Use the "Embed this tool" snippet on this page to add a free, working copy of Body Fat Calculator (US Navy Method) to your own blog post or page.
SEO and sharing notes
This page has a single clean canonical URL, descriptive metadata, breadcrumb structured data, and internal links to related tools. Supported calculators and converters can also copy a prefilled share link without changing the canonical index URL.