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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 chart

1.51.61.71.81.92160406080100120140Height [meters]Weight [kilograms]Height [feet and inches]6’66’35’115’75’34’1190110130150170190210230250270Weight [pounds]290310330350Underweight BMI <18.5Normal range BMI18.5-25Overweight BMI 25-30ObeseBMI >30507090110130150

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