Disclaimer

Please read this Disclaimer carefully before using BMI Calculator. It explains what the information on this site is, what it is not, and why you should not rely on it alone for decisions about your health.

General information only

All content on this site, including the BMI calculator, the ideal weight calculator, the body fat calculator, the lean mass calculator, the calorie deficit calculator, and all written explanations, is provided for general information and education only. It is not medical advice, and it is not intended to replace professional medical advice, diagnosis, or treatment. Always seek the advice of a qualified health professional, such as your doctor or a registered dietitian, with any question you may have about a medical condition, your weight, your diet, or your fitness.

BMI is a general indicator only

Body Mass Index (BMI) is calculated from height and weight alone. It gives a simple, general indication of how weight relates to height, and it is commonly used as a screening tool at population level. It is not a direct measure of body fat, health, fitness, or disease risk for an individual. A BMI result does not, by itself, tell you whether you are healthy, and it does not diagnose any condition. Two people with the same BMI can have very different amounts of muscle and fat, different diets, different activity levels, and different medical histories.

For that reason, a BMI result should be read together with other information, and, where it matters, with professional advice. Do not use a BMI result on this site to diagnose yourself, to conclude that you do or do not have a health problem, or to decide on a treatment, diet, or exercise programme.

Important limits of BMI

BMI has well-known limits, and it can be misleading in several common situations:

• Athletes and very muscular people: Muscle weighs more than fat for the same volume, so a person with a lot of muscle may have a high BMI even with a low body fat percentage. BMI does not distinguish between muscle and fat.
• Pregnancy: BMI is not designed to assess health during pregnancy, when weight changes naturally and other measures are used by health professionals. Pregnant women should follow the guidance of their doctor or midwife, not a general BMI category.
• Children and teenagers: BMI is interpreted differently for children and young people, using age- and sex-specific growth charts rather than adult categories. The adult BMI categories on this site are not suitable for children.
• Older adults: Body composition changes with age, including loss of muscle and changes in bone density, so BMI can be less informative for older adults, and a result should be interpreted with professional guidance.
• Other factors: BMI does not take into account where fat is stored, waist circumference, diet quality, physical activity, smoking, family history, medical conditions, or medication, all of which can affect health risk.

Ideal weight, body fat, lean mass, and calorie deficit figures on this site have similar limits. They are estimates based on general formulas and on the values you enter. They are not precise clinical measurements, and they cannot capture your full health picture.

Not a substitute for professional medical advice

Never disregard professional medical advice, and never delay seeking it, because of something you have read or calculated on this site. If you think you may have a medical emergency, seek urgent help locally. If you have a health condition, are taking medication, are pregnant, are under 18, are over 65, or are concerned about your weight or health in any way, please speak to a qualified health professional before making changes to your diet, exercise, or treatment.

Similarly, please do not use information from this site to advise another person about their health, to diagnose someone else, or to replace advice that person has received from a professional.

Accuracy and responsibility

We aim to use widely recognised formulas and clear explanations, but we do not guarantee that any result, article, or explanation will be complete, current, or correct for your situation. Results depend on the accuracy of the values you enter, and on formulas that are simplifications by design. You are responsible for checking the values you enter and for deciding how to use a result. To the fullest extent permitted by applicable law, we are not liable for any loss or damage arising from reliance on general information on this site.

Contact

If you have a question about this Disclaimer, please contact us through our Contact Us page or by email at bmicalculator786@gmail.com. Please note that replies are general information only and are not medical advice.

By using this site, you acknowledge that you have read this Disclaimer and that you understand that all information here is general information only.