Body Fat Calculator
Enter sex, height, neck, and waist (and hip for women) for a Navy-method style body-fat estimate. Informational MVP — not a clinical measurement.
Runs entirely in your browser. Your data never leaves this device.
- Navy-style formula
- Metric inputs
- Sex-specific
- BMI companion
- Private
How it works
- Adjust the controls or paste your input.
- Preview results instantly in the browser.
- Copy or download the output — nothing is uploaded.
Key features
- Navy-style formula
- Metric inputs
- Sex-specific
- BMI companion
- Private
FAQ
Is this private?
Yes — processing runs in your browser; we do not upload your inputs.
Do I need an account?
No — free to use without signup.
Does it work offline?
After the page loads, most tools work without further network calls.
Mobile friendly?
Yes — layouts adapt to smaller screens.
Accurate?
Navy-style estimates are approximate; treat results as informational only.
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