BMI Calculator

Body Mass Index (BMI) is an established measure utilized by physicians and health experts to determine weight status (i.e. underweight, overweight or within a healthy weight range). The Body Mass Index (BMI) or Quetelet index is a value derived from the mass (weight) and height of an individual. The BMI is defined as the body mass divided by the square of the body height, and is universally expressed in units of kg/m2, resulting from mass in kilograms and height in metres.

\mathrm {BMI} ={\frac {{\text{mass}}_{\text{kg}}}{{\text{height}}_{\text{m}}^{2}}}={\frac {{\text{mass}}_{\text{lb}}}{{\text{height}}_{\text{in}}^{2}}}\times 703

Use this BMI Calculator to find out what your BMI can tell you about your health and well-being.

The WHO regards a BMI of less than 20 as underweight and may indicate malnutrition, an eating disorder, or other health problems, while a BMI equal to or greater than 23 is considered overweight and above 25 is considered obese. These ranges of BMI values are valid only as statistical categories.


BMI (kg/m2) Category Health Risk
BMI Below 18 Malnutrition 2 Anorexia, Bilimbi, Osteoporosis and Break Down of muscle. Etc
18.1-20.0 Malnutrition 1 Digestive problems, Weakness, Chronic Fatigue Stress, Anxiety Reproductive Hormonal Dysfunction
20.1-23.0 Normal Normal menstruation, can handle stress, Good Energy level Vitality, Resistance to Illness, Good physical Condition etc.
23.1-25.0 Overweight Fatigue, Digestive Problem, Circulation problem, Varicose Veins, etc.
25.1-28.0 Obesity grade 1 Diabetes, Hypertension, Cardiovascular, Diseases, Blood Clots, Strokes, Joint Problem
28.1-30.0 Obesity grade 2 Diabetes, Cancer, Angina, Heart Attacks, Phlebitis, Arteriosclerosis & Strokes, etc.
OVER 30 Obesity grade 3 Maximum risk of Diabetes, Cancer, Heart Disease, premature death.


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