What is your BMI?
The Body Mass Index (or BMI) is a measure that shows whether people have the right weight for their height. The World Health Organization (WHO), governments and health workers use it. It is also sometimes called the Quetelet Index.
The BMI was invented by Adolphe Quetelet between 1830 and 1850.
A scientist named Ancel Keys first used the term body mass index in 1972. He wrote that governments should measure the BMI of adults to find out whether they are too fat or too thin.
To find somebody’s BMI:
- Measure their weight (body mass) in kilograms or pounds
- Measure their height in meters or inches.
- Divide their weight by the square of their height.
This is the formula:
For example, a man whose weight is 78 kg and height is 1.83 m has a BMI of:
A man whose weight is 172 lb and height is 72 in has a BMI of:
Overweight or not?
Health organizations, including the World Health Organization (WHO), use the BMI to help decide whether people are too fat or too thin. The WHO uses these numbers for adults:
|Seriously Underweight||less than 16.49 (–16.49)|
|Underweight||between 16.5 and 18.49 (16.5–18.49)|
|Normal||between 18.5 and 24.99 (18.5–24.99)|
|Overweight||between 25 and 29.99 (25–29.99)|
|Obese||30 or more (30–)|
Some people disagree with these numbers. Some experts think the Overweight range for people with Asian body types should be 23–27.49, not 25–29.99. Some experts think the lowest Normal BMI should be 20 for men, and 18 for women. The old BMI definition of overweight was 27. This changed in 1998.
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Are you in the healthy range? Use this tool to calculate your Body Mass Index (BMI) now to know your risk for obesity-related diseases.
Check your BMI, click HERE (safe link)