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Use this body fat calculator for a clear health & fitness estimate. Results update instantly in your browser.
What this calculator does
Estimate body-fat percentage from body measurements.
How to use this calculator
- Enter the requested measurements using consistent units.
- Review the calculation assumptions before using the result.
- Use trends over time rather than one reading alone.
How to calculate
Choose the calculation mode where available, then enter the values requested by the body fat calculator. Results update immediately.
Worked example
The defaults provide a complete worked example. Change any value to recalculate the result and any schedule shown.
Understanding your result
Use trends over time rather than one reading alone.
- Tape-measure formulas are approximate.
- Double-check values and units before calculating.
This calculator provides an educational estimate and is not medical advice or a diagnosis.
Frequently asked questions
What does this body fat calculator do?
Estimate body-fat percentage from body measurements.
How do I use this body fat calculator?
Enter the requested measurements using consistent units.
What does the result mean?
Use trends over time rather than one reading alone.
What should I check before relying on it?
Tape-measure formulas are approximate.