BMI Calculator
Calculate BMI from a height and a weight.
BMI is a screening number. It is not medical advice.
How to calculate BMI
1. Choose metric or US units.
2. Enter the height and weight.
3. Read the BMI and the standard category.
What BMI means
BMI is weight in kilograms divided by height in meters squared. Under 18.5 is underweight, 18.5 to 24.9 is the normal range, 25 to 29.9 is overweight, and 30 or more is obese. Those labels are the common adult cutoffs. They do not diagnose a person.
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