Body Fat Calculator
Estimate body-fat percentage with the U.S. Navy circumference method.
Health calculator results are general estimates for adults and are not medical advice, diagnosis or treatment recommendations.
Instructions: Body Fat Calculator
Follow these steps to get a reliable result without unnecessary setup.
- 1
Choose units and the sex-specific U.S. Navy formula.
- 2
Choose the options in Body Fat Calculator that match your intended output, such as units, format, mode, range or quality when those controls are available.
- 3
Run Body Fat Calculator and review the displayed result, preview or validation message before proceeding.
- 4
Individual health circumstances differ; use the estimate as general information and consult a qualified professional for personal medical decisions.
- 5
Use the available reset, copy or download action in Body Fat Calculator when you are satisfied with the result; only actions supported by this tool are shown.
About this tool: Body Fat Calculator
Estimate body-fat percentage from sex-specific circumference measurements and height using the U.S. Navy method, clearly labelled as an estimate.
The result is a general informational estimate for adults and should not be treated as medical advice, diagnosis or treatment guidance.
Body Fat Calculator is presented in the shared NexterHub tool layout so the working controls stay near the top while the method, example, limitations and related utilities remain available below the result.
How it works
The U.S. Navy circumference equations use logarithmic relationships between height and body circumferences.
Practical example
The tool reports the formula used alongside the estimated percentage.
Important notes
Individual health circumstances differ; use the estimate as general information and consult a qualified professional for personal medical decisions.
Privacy & processing
The estimate is calculated in the browser from the measurements you enter. Avoid including personally identifying details that are not required.
Frequently asked questions
What does Body Fat Calculator do?
Estimate body-fat percentage with the U.S. Navy circumference method.
How do I use Body Fat Calculator?
Start with the main input step: Choose units and the sex-specific U.S. Navy formula. Then choose any relevant options, run the tool and review the result.
How does Body Fat Calculator calculate or process the result?
The U.S. Navy circumference equations use logarithmic relationships between height and body circumferences.
What should I check before using a result from Body Fat Calculator?
Individual health circumstances differ; use the estimate as general information and consult a qualified professional for personal medical decisions.
Does Body Fat Calculator send my input to a NexterHub server?
The estimate is calculated in the browser from the measurements you enter. Avoid including personally identifying details that are not required.
Can I use Body Fat Calculator on a phone or tablet?
Yes. Body Fat Calculator uses the responsive NexterHub tool layout, so controls and results adapt to smaller touch screens.