Educational only — not medical advice. See full disclaimer. Disclaimer

Medical disclaimer

This tool is for informational and educational purposes only. It does not constitute medical advice, diagnosis, or treatment. Always consult your doctor or qualified healthcare professional before making any health-related decisions. Results are estimates only.

Last medically reviewed: March 2026

Content last updated: March 30, 2026

Body fat calculator

The U.S. Navy method uses circumference measurements. Accuracy depends on measurement technique and body shape; DEXA or hydrostatic weighing are more precise.

If you are unsure about body fat percentage, start with our BMI calculator for a simpler screening number, then return here for a tape-based estimate.

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Sex

Estimated body fat

11.1%

ACE-style descriptive body fat % ranges

Common fitness-industry reference bands. They are not clinical thresholds; methods like DEXA may disagree with tape estimates. Educational illustration only — not a diagnosis or personal target.

ACE (American Council on Exercise). Percent body fat norms commonly cited in fitness education (approximate descriptive categories; not clinical cutoffs).

This tool is for informational and educational purposes only. It does not constitute medical advice, diagnosis, or treatment. Always consult your doctor or qualified healthcare professional before making any health-related decisions. Results are estimates only.

Sources, formulas & further reading

Based on: U.S. Navy circumference (tape) method; skinfold alternatives such as Jackson–Pollock are described in ACE/ACSM literature.

For additional clinical context, see independent references from the publishers below (WHO, CDC, PubMed, Medscape, ACE, ACOG, NIH, NCBI, USDA — as applicable).