Disclaimer.
Last updated: 2026-06-05
For information only — not medical advice
The calculators, charts, reference tables, and content on this site are for general information and educational purposes only. They are not a substitute for professional medical advice, diagnosis or treatment. Always seek the advice of a qualified healthcare provider with any questions you may have about a medical condition, weight, diet, exercise program, or before starting or changing any treatment.
No doctor–patient relationship
Your use of this site does not create a doctor–patient relationship between you and the operators of the site. No content on this site should be construed as personalised medical advice. If you think you may have a medical emergency, call your doctor, go to the emergency department, or call your local emergency number immediately.
Accuracy of the calculations
The calculations on this site are based on standard, widely-used formulas and reference values (WHO adult cut-offs, CDC child/teen percentiles, Mifflin–St Jeor BMR, Deurenberg body-fat estimate, Devine ideal weight, Boer lean body mass). While we work to keep the implementation accurate, we cannot guarantee that the result is error-free. The body-fat percentage and the healthy weight range are population-level estimates; for an individual measurement, please consult a clinician.
Limitations of BMI
Body Mass Index is a screening tool, not a measurement of body fat. It uses only height and weight, so it cannot tell muscle from fat, bone from water, or how weight is distributed. BMI may overestimate body fat in muscular athletes and underestimate it in older adults with sarcopenia. It is not validated during pregnancy. For a richer picture of cardiometabolic risk, pair BMI with waist circumference, body-fat percentage, blood pressure, fasting glucose and lipids — and review with a clinician.
No endorsement
References to external organisations (WHO, CDC, NIH, NICE, Lancet) are for citation only and do not imply endorsement by those organisations of the calculators or content on this site.
Changes
We may update this disclaimer from time to time. The "Last updated" date at the top of the page reflects the most recent change.
Contact
For questions, see our Contact page.