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The boy's weight is 70kg and his height is 160cm.Thus,his bmi is 70/160 x 160 = 27.34
How do I know if I am overweight?
A good and
simple Index of body fat in adults is the Body Mass Index or BMI.
Measure your weight (in kilograms) and height (in meters). Your BMI is:
BMI = WEIGHT/(HEIGHT X HEIGHT)
If you are 100 kg and your height is 2.0 m, your BMI is 100/(2.0 x 2.0) = 25. Based upon your BMI, you are:
25.0 to 29.9 |
overweight |
30.0 to 39.9 |
obese |
More than 40.0 |
morbidly obese |
A BMI of 30 is associated with a 1.5 fold risk of premature death while a BMI of 40 is associated with a 2.5 fold risk.
Body Mass Index (BMI) can be used to indicate if you are overweight, obese, underweight or normal. It will, however, overestimate fatness in people who are muscular or atheletic. Because of these problems, this body mass index calculator shows extra statistics to help you be informed and judge your own body compared to others of the same height and age. Also offered are average weight and height charts and Body Mass Index charts, which show data you just can't find anywhere else.
Women tend to believe they look their best at values between 20 to 22 and men are usually satisfied with a BMI of 23 to 25. If your BMI is between 17 to 22, your life expectancy is longer than average. You don't need to lose weight.
If your BMI is between 23 and 25, you are not considered overweight by most people. But if your BMI is 26 or more, that's not good. But you knew that already.
Above all, Don't Worry, Be Happy.
Its unhealthy to have anxiety over a less-than-perfect body image. And, if
this calculator's description of your body seems wrong for you, just trust your
own judgment. A healthy mental attitude is just as important as physical
fitness.
For adults, a body mass index:
BMI Categories:
Classification of Overweight and Obesity
by BMI, Waist Circumference, |
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|
|
|
Disease Risk* Relative to Normal Weight and Waist Circumference |
|
|
BMI |
Obesity |
Men 102
cm (40 in) or less |
Men >
102 cm (40 in) |
Underweight |
< 18.5 |
|
- |
- |
Normal |
18.5 - 24.9 |
|
- |
- |
Overweight |
25.0 - 29.9 |
|
Increased |
High |
Obesity |
30.0 - 34.9 |
I |
High |
Very High |
|
35.0 - 39.9 |
II |
Very High |
Very High |
Extreme Obesity |
40.0 + |
III |
Extremely High |
Extremely |