# BMI calculator

A BMI calculator is a tool that calculates a person’s body mass index (BMI) based on their height and weight. BMI is a measurement of body fat based on an individual’s height and weight, and it is commonly used as a screening tool to identify potential health problems related to weight.

Here’s a table of BMI ranges:

BMI Category | BMI Range |
---|---|

Underweight | < 18.5 |

Normal weight | 18.5 - 24.9 |

Overweight | 25.0 - 29.9 |

Obesity class I | 30.0 - 34.9 |

Obesity class II | 35.0 - 39.9 |

Obesity class III | ≥ 40.0 |

The formula for calculating BMI is weight (kg) divided by height (m) squared. Here’s the formula in more detail:

BMI = weight (kg) / height (m)²

To calculate BMI using pounds and inches, the formula is slightly different:

BMI = (weight (lbs) / height (in)²) x 703