BMI Weight Loss Calculator

About BMI Weight Loss Calculator Android App

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

Here are some key points about BMI.
*Body mass index (BMI) is a measure of relative size based on the mass and height of an individual.
*The Quetelet Index was devised by Adolphe Quetelet, a Belgian mathematician, astronomer and statistician, in 1832. It was later termed "body mass index" in 1972 by Ancel Keys.
*BMI is a simple, inexpensive and noninvasive surrogate measure of body fat.
*Factors such as age, sex, ethnicity and muscle mass are not accounted for in BMI.
*For adults 20 years and older, BMI is interpreted by using standard weight status categories that are the same for all ages, and for both men and women.
*For children and adolescents between 2-20 years old, BMI is interpreted relative to a child's age and sex.
*BMI is a reasonable indicator of body fat for both adults and children.
*Because BMI does not measure body fat directly, it should not be used as a diagnostic tool.
*BMI should be used as a measure to track weight status in populations and as a screening tool to identify potential weight problems in individuals.
*Other measures of body fat, such as skinfold thicknesses, bioelectrical impedance, underwater weighing and dual energy X-ray absorption, maybe more accurate than BMI.


For any height there is a range of healthy weights. BMI is classified in the following way:

© A BMI of less than 18.5 kg/m2 indicates you are underweight. You may need to gain weight.

© If your BMI is 19 to 24.9 kg/m2, you're are a healthy weight, and should aim to stay that way.

© A BMI of 25 to 29 kg/m2 is defined as overweight. It's a good idea to lose some weight for your health's sake, or at least aim to prevent further weight gain.

© A BMI of over 30 kg/m2 is defined as fat and means your health is at risk. Losing weight will improve your health.

© A BMI of over 35 kg/m2 is defined as severely obese and means your health is at risk. Losing weight will improve your health.

Note: BMI is not always a good reflection of body fatness. A very muscular person might have a high BMI when in fact their body fat is at a healthy level, as muscle weighs more than fat