Body Mass Index (BMI) is a value calculated from one's height and mass/weight, and can be used to determine one's general body type and as a very loose metric for health. Keep in mind that since BMI uses one's weight, the calculation does not differentiate between bodyfat and muscle. For example, eight-time Mr. Olympia Ronnie Coleman had a BMI of 41.8 in his peak competition weight, which would categorize him as "obese".
Select Units:
Enter your Weight:lbs
Select Height feetinches
Enter your Mass:kg
Enter your Height: cm
BMI:
kg/m2
Categorizing a BMI of kg/m2
BMI
Weight Status
Below 18.5
Underweight
18.5 to 24.9
Normal
25 to 29.9
Overweight
30 and Above
Obese
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