## BMI Calculator – BMI

BMI is a measure of body weight based on a weight and height. In fact it does not actually measure the percentage of body fat but it is actually used to estimate a healthy body weight. Due to its ease of measurement and calculation, it is the most widely used diagnostic gizmo to identify weight issues within a population, usually whether individuals are underweight, fat or obese. For calculate it you can use our BMI Calculator.

# BMI Calculator

Free BMI Calculator

### BMI Calculator – Formula

kg/m²

Category | BMI range – kg/m ^{2} |
BMI Prime | Mass (weight) of a 1.8 metres (5 ft 11 in) person with this BMI |
---|---|---|---|

Severely underweight | less than 16.5 | less than 0.66 | less than 53.5 kilograms (8.42 st; 118 lb) |

Underweight | from 16.5 to 18.4 |
from 0.66 to 0.73 | between 53.5 and 59.9 kilograms (8.42 and 9.43 st; 118 and 132 lb) |

Normal | from 18.5 to 24.9 | from 0.74 to 0.99 | between 60 and 80.9 kilograms (9.4 and 12.74 st; 130 and 178 lb) |

Overweight | from 25 to 29.9 | from 1.0 to 1.19 | between 81 and 96.9 kilograms (12.8 and 15.26 st; 180 and 214 lb) |

Obese Class I | from 30 to 34.9 | from 1.2 to 1.39 | between 97 and 112.9 kilograms (15.3 and 17.78 st; 210 and 249 lb) |

Obese Class II | from 35 to 39.9 | from 1.4 to 1.59 | between 113 and 129.9 kilograms (17.8 and 20.46 st; 250 and 286 lb) |

Obese Class III | over 40 | over 1.6 | from 130 kilograms (20 st; 290 lb) |

Our BMI Calculator is based in the table above.