Free body fat calculator using the US Navy method: enter sex, height, waist, neck and hip measurements to estimate body fat percentage. Approximate only. 100% Local
How to Use the Body Fat Calculator
Enter height and body measurements and press Estimate Body Fat. Women also need a hip measurement. The result updates as you type.
How it works
Uses the US Navy circumference method, with the measurement inserted as inches internally.
Men use waist and neck; women use waist, hip and neck.
Measure at the navel and the narrowest neck point, keeping the tape level.
Features
Estimated body fat percentage
US Navy circumference method
Separate male and female formulas
All processing runs locally in your browser. Your data is not uploaded to any server.
This is an approximate estimate, not a medical measurement or advice.