BMI Calculator

Body Mass Index (BMI) calculator:

Years
ft
in
cm
lb
kg
kg/m2
kg/m2

BMI categories table for adults (age ≥ 20)

BMI Category BMI Range
(kg/m2)
Health risk
Underweight 18.4 and below Malnutrition risk
Normal weight 18.5 - 24.9 Low risk
Overweight 25 - 29.9 Enchanced risk
Moderately obese 30 - 34.9 Medium risk
Severely obese 35 - 39.9 High risk
Very severely obese 40 and above Very high risk

BMI categories table for kids/children (age < 20)

BMI Category BMI Percentile
(kg/m2)
Health risk
Underweight Less than 5th percentile Malnutrition risk
Normal weight 5th percentile to less than 85th percentile Low risk
Overweight 85th percentile to less than 95th percentile Enchanced risk
Obese 95th percentile and greater High risk

BMI chart

BMI chart
Source: wikimedia

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

 


See also

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