Body Fat Percentage Calculator
Estimate your body fat percentage using the highly accurate US Navy Method.
About The Body Fat Calculator
Calculate your body fat percentage using the highly accurate US Navy Method. Free body fat calculator based on your neck, waist, and hip measurements.
Unlike many free tools online, Body Fat Calculator runs entirely inside your browser instead of uploading your health data to a remote server. That means faster results and complete privacy, whether you're tracking fitness or wellness goals on a laptop or a phone.
How to Use
- Open the Body Fat Calculator tool — no sign-up or installation required.
- Enter your input or upload the required file using the tool above.
- Review the live result as it updates instantly in your browser.
- Copy, download, or export your result when you're happy with it.
Frequently Asked Questions
Is Body Fat Calculator free to use?
Yes. Body Fat Calculator is completely free, with no sign-up, no watermark, and no usage limits.
Is my data safe when I use Body Fat Calculator?
Yes. Body Fat Calculator runs entirely in your browser, so your health data stay local on your device and are never uploaded to a server.
How accurate are the results?
The calculator uses standard, widely accepted formulas. Results are estimates meant to guide your decisions and should not replace professional advice.