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Body Fat Calculator
Estimate body fat percentage with the US Navy method using height, neck, waist, and hip measurements, then get a quick, private result for fitness tracking.
How to use this tool
- Choose sex and enter required circumference measurements in centimeters.
- Review estimated body fat percentage and category output instantly.
- Copy the result for progress tracking in your fitness logs.
Interpretation guidance
- This method provides an estimate and is not a clinical diagnostic measurement.
- Small measurement differences can noticeably change output percentage.
- Use repeat measurements over time to evaluate trends rather than single readings.
Measurement tips
- Use a flexible tape and keep placement consistent each time.
- Measure under similar conditions, such as same time of day.
- Track values monthly for clearer long-term progress signals.
FAQ
- Is this as accurate as clinical body composition tests?
- No. It is a practical estimate; clinical methods can provide higher accuracy.
- Why is hip measurement only shown for female mode?
- The implemented US Navy formula uses hip circumference for female calculations only.
- Does this store my measurements?
- No. Inputs and calculations remain in your browser session.
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