Free FFMI Calculator is strictly an educational and informational fitness tool.
The calculations, classifications, and projections provided by this website do NOT constitute medical advice, nutritional prescriptions, or clinical diagnosis. Always consult a qualified medical doctor, physician, or sports medicine specialist before initiating any intensive resistance training program, extreme dietary deficit, or body recomposition protocol.
1. Acceptance of Terms
By accessing or using freeffmicalculator.com (the "Service"), you agree to be bound by these Terms and Conditions. If you do not agree with any part of these terms, you must discontinue use of the website immediately.
2. Educational Purpose & Scientific Accuracy
Our calculations are derived from published scientific literature, including:
- The Kouri et al. (1995) normalized FFMI algorithm
- US Naval Health Research Center circumference equations (Hodgdon & Beckett 1984)
- Adult BMI age/sex predictive models (Deurenberg et al. 1991)
- Maximum muscular potential equations for drug-free athletes (Casey Butt, Ph.D.)
While these mathematical algorithms represent peer-reviewed scientific approximations, individual anatomical variance, bone density, hydration fluctuations, body fat measurement errors, and genetic outliers can produce variations. Results should be interpreted as general benchmarks rather than definitive clinical measurements.
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- Attempt to interfere with or disrupt the integrity or security of the website.
- Use automated scripts, bots, or scrapers to generate abusive load on our infrastructure.
- Misrepresent our calculations as certified medical diagnostic documentation.
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