Body Fat Calculator
Estimate body fat percentage using the US Navy method or the BMI method from height, weight and circumference measurements. Fully processed in your browser.
Runs in your browser
Real-time
Measurements
Sex
Method
Body fat
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0.0%
—
—
—
Fat mass
—
Lean mass
—
BMI
—
Waist-hip
| Level | Men | Women |
|---|
Circumference methods are accurate to about ±3%. Use DEXA or a scale for precision.
About this tool
Estimate body fat percentage using the US Navy method or the BMI method from height, weight and circumference measurements. Fully processed in your browser.
How to use
- Fill in the input box above, or click "Fill sample" to try it instantly
- Adjust the options as needed — results update as you type
- Click "Run" to get the result, then copy or export it in one click
Tips
- Runs entirely in your browser — your data never leaves the device
- Completely free, no registration, no usage limits
- Most tools compute in real time as you type