Body Mass Index and BMI Calculator

Body Mass Index and BMI Calculator

Body Mass Index and BMI Calculator

The body mass index (BMI) is a number calculated from a person's weight and height. The BMI is calculated by dividing the body mass by the square of the body height and is expressed in kilogrammes per square metre (kg/m2), with mass in kilogrammes and height in metres.

A table or chart that presents BMI as a function of mass and height using contour lines or colours for different BMI categories and may utilise other units of measurement can be used to calculate BMI.

Based on tissue mass (muscle, fat, and bone) and height, the BMI is a handy rule of thumb used to generically describe a person as underweight, normal weight, overweight, or obese. BMI ranges that are widely recognised are underweight (under 18.5 kg/m2), normal weight (18.5 to 25), overweight (25 to 30), and obese (over 30)

BMI Formula

Body Mass Index and BMI calculator

The BMI has limitations that make it less useful than some of the alternatives when used to predict an individual's health rather than as a statistical assessment for groups, especially when used to individuals with abdominal obesity, low stature, or unusually high muscle mass.

BMIs below 20 and above 25 have been linked to an increased risk of all-cause death, with the risk increasing as one moves away from the 20–25 range.

The optimal range, however, differs by ethnicity, with a BMI that is normal for a group of Europeans being unhealthy for a group of Asians.

Between 1830 and 1850, Adolphe Quetelet, a Belgian astronomer, mathematician, statistician, and sociologist, constructed what he dubbed "social physics" and devised the BMI's foundation. Ancel Keys and colleagues created the term "body mass index" (BMI) to describe the ratio of human body weight to squared height in a study published in the Journal of Chronic Diseases in July 1972. In this work, Keys stated that the BMI was "...at least as excellent as any other relative weight index as a predictor of relative obesity, if not totally satisfactory."

Height Wise BMI Chart:

Body Mass Index and BMI calculator

Based on BMI readings, this is the World Health Organization's (WHO) recommended adult body weight. It is appropriate for both men and women who are at least 18 years old.

BMI Chart:

Body Mass Index and BMI calculator




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