BMI Calculator

BMI categories table

BMI CategoryBMI Range
(kg/m2)
Health risk
Underweight18.4 and belowMalnutrition risk
Normal weight18.5 - 24.9Low risk
Overweight25 - 29.9Enchanced risk
Moderately obese30 - 34.9Medium risk
Severely obese35 - 39.9High risk
Very severely obese40 and aboveVery high risk

BMI formula

The BMI (Body Mass Index) in (kg/m2) is equal to the mass in kilograms (kg) divided by the square height in meters (m):

BMI(kg/m2) = mass(kg) / height2(m)

The BMI (Body Mass Index) in (kg/m2) is equal to the mass in pounds (lbs) divided by the square height in inches (in) times 703:

BMI(kg/m2) = mass(lb) / height2(in) × 703

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