BMI (Body Mass Index) is used to approximate your percentage of body fat. It is also used to determine if your weight could be putting you at a higher risk for health problems.
How is BMI calculated?
BMI is calculated by taking your weight in kilograms and dividing by the square of your height in centimeters.
BMI = (weight in kg) / (height in m)2
Example: 70 kg, 175 cm (1.75 m) => 70 /(1.75)2 = 22.86
If you prefer English units then you can take your weight in pounds times 703 and divide this by the square of your height in inches.
BMI = (weight in lbs) * 703 / (height in inches)2
Example: 180 lbs, 5′ 10" (70") => 180 * 703 / (70)2 = 25.82
| BMI | Weight Status | Waist <> | Waist > 40" for men and > 35" for women |
| Below 18.5 | Underweight | - | - |
| 18.5 - 24.9 | Normal | - | - |
| 25.0- 29.9 | Overweight | Increased | High |
| 30.0 - 34.6 | Obese | High | Very High |
| 35.0 - 39.9 | Obese | Very High | Very High |
| 40.0 + | Extreme Obesity | Extremely High | Extremely High |
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