## BMI Calculator

This is a free online calculator to calculate BMI (body mass index) of both adult men and women. BMI values are age-independent and the same for both males and females.

Height and weight values may be entered either in metric or customary units (feet-inches and pounds). Use the BMI for children calculator to find BMI of children under 18 years of age.

#### BMI Formula

The body mass index is defined as the weight in Kg divided by the square of the height in meters.

BMI = Body weight / (height * height)

#### BMI Scale

The following table summarizes the nutritional status of adults according to BMI values.

BMI Classification (Source: WHO)
Body Weight |
BMI Range |

Underweight |
<18.50 |

Normal weight |
18.50 - 24.99 |

Pre-obesity |
25.00 - 29.99 |

Obesity class I |
30.00 - 34.99 |

Obesity class II |
35.00 - 39.99 |

Obesity class III |
>=40.00 |

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