FAQ: Body Fat Calculator
1. How does this calculator estimate body fat?
It uses the U.S. Navy circumference method, based on height and specific body measurements.
2. What measurements do I need?
Height, neck, waist for all; hip for women. Measure in inches for USA users.
3. Is this accurate?
It's an estimate (within 3-4% for most). For precision, use DEXA scans or calipers.
4. What's a healthy body fat range in the USA?
Men: 8-19% (average); Women: 21-33% (average). Athletes may have lower ranges.
5. Why does gender matter?
Formulas differ; women include hip measurement due to body fat distribution.
6. Can I use this for fitness tracking?
Yes, track changes over time. Combine with other metrics like BMI for better insights.
7. Is my data private?
Yes, calculations are done in your browser—no data is stored or shared.