BMI Calculator

A

Responsive BMI Calculator

Results:

BMI:

BMI Category:

Health Risk:

BMI categories table for adults (age ≥ 20)

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 categories table for kids/children (age < 20)

BMI CategoryBMI Percentile
(kg/m2)
Health risk
UnderweightLess than 5th percentileMalnutrition risk
Normal weight5th percentile to less than 85th percentileLow risk
Overweight85th percentile to less than 95th percentileEnchanced risk
Obese95th percentile and greaterHigh 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

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