Body Metrics
Body Fat Calculator
Estimate your body fat percentage from a few simple tape-measure measurements using the U.S. Navy method.
What your result means
Healthy ranges differ for men and women. ACE classifies adult ranges from essential up through above average.
How we calculate this
The U.S. Navy circumference equations use height, neck, waist, and (for women) hip measurements.
Limitations
Accuracy is typically within ±3–4% of a DEXA scan. Measurement technique matters — keep the tape level and consistent.
Frequently asked questions
Related calculators
Related guides
References
- World Health Organization. https://www.who.int
- NHS — Health A to Z. https://www.nhs.uk
- Centers for Disease Control and Prevention. https://www.cdc.gov
Browse all calculators or read our evidence-based guides.