Body Mass Index Calculator
Body Mass Index Calculator
Initial data
Formula for calculating BMI:
| BMI | Weight, kg |
|
|
|
| Height (m)2 |
Classification of obesity by BMI (WHO, 1997)
| Classification | Body mass index, kg/m2 (Quetelet’s index BMI) | Risk of comorbidities |
| Underweight | less than 18.5 | Low (increased risk of other diseases) |
| Normal body weight | 18,5-24,9 | normal |
| Overweight (pre-obesity) | 25,0-29,9 | Increased |
| Obesity I degree | 30,0-34,9 | High |
| Obesity II degree | 35,0-39,9 | Very high |
| Obesity III degree | 40,0 and more | Extremely high |
It should be noted that the Quetelet index is not suitable for assessing the body weight of people with developed muscles (athletes, bodybuilders, etc.), and people under 20 years old or over 65 years old, pregnant and lactating women.
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