# BMI Calculator

<18.5

18.5-24.9

25-29.9

≥30

The BMI Calculator finds the body mass index given weight and height. Calculate your BMI and find the BMI weight category for your height. The calculator also considers the normal weight range given your height.

Calculate BMI with weight in pounds, or kilograms. Enter height in feet and inches, or centimeters.

To convert meters to centimeters, **multiply the number of meters by 100**. For example, to convert 1.7 m to cm, multiply 1.7 by 100, and we get 170 centimeters.

The CDC and WHO use the BMI range charts below to evaluate the weight of adults aged 20 and over given their height. These ranges typically apply to North American and European populations. Wikipedia lists alternative BMI ranges and categories for specific Asian populations.

CDC Adult BMI Categories

BMI | Status |

≤ 18.4 | Underweight |

18.5 – 24.9 | Normal |

25.0 – 39.9 | Overweight |

≥ 40.0 | Obese |

WHO Adult BMI Categories

BMI | Category |

< 16.0 | Severely Underweight |

16.0 – 18.4 | Underweight |

18.5 – 24.9 | Normal |

25.0 – 29.9 | Overweight |

30.0 – 34.9 | Moderately Obese |

35.0 – 39.9 | Severely Obese |

> 40.0 | Morbidly Obese |

It’s important to know that the generic BMI chart above does not account for differences between men and women. It is also limited in evaluating bodyweight health in people of short stature, or those with very high muscle mass.