# BMI Calculator

Body Mass Index (BMI) calculator:

## BMI categories table for adults (age ≥ 20)

BMI Category |
BMI Range (kg/m^{2}) |
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/m^{2}) |
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 formula

The BMI (Body Mass Index) in (kg/m^{2}) is equal to the mass in kilograms (kg) divided by the square height in meters (m):

BMI

_{(kg/m2)} =

mass_{(kg)}height^{2}_{(m)}

The BMI (Body Mass Index) in (kg/m^{2}) is equal to the mass in pounds (lbs) divided by the square height in inches (in) times 703:

BMI

_{(kg/m2)} =

mass_{(lb)}height^{2}_{(in)}

× 703

## See also