Adolphe Quetelet

1796 -1874

The Body Mass Index(BMI) formula was developed by Belgium statistician Adolphe Quetelet (1796-1874), and was known as the Quetelet Index. BMI is also referred to as 'body mass indicator'. BMI is an internationally used measure of obesity.

**How to calculate BMI** - for users who wish to manually calculate BMI we have provided a bmi formula for both imperial & metric measurements (*we also offer an online BMI Calculator*).

Body mass index calculation is very straightforward. Calculating body mass index requires only two measurements: height & weight.

The imperial bmi formula accepts weight measurements in pounds & height measurements in either inches or feet.

*1 foot = 12 inches
inches² = inches * inches*

BMI = ( lbs/inches² ) |
(weight in pounds * 703 ) |

———————————— | |

height in inches² |

The metric bmi formula accepts weight measurements in kilograms & height measurements in either cm's or meters.

*1 meter = 100cms
meters² = meters * meters*

BMI = ( kg/m² ) |
weight in kilograms |

———————————— | |

height in meters² |

BMI | Weight Status |
---|---|

Below 18.5 | Underweight |

18.5 -24.9 | Normal |

25 - 29.9 | Overweight |

30 & Above | Obese |

If you have calculated BMI use the table above to find your weight status. Different nations & organizations use different BMI ranges to classify weight status.

Our table is in keeping with the internationally recognized, US Department of Health & Human Services weight status categories.

*Please note:* this site features an online BMI Calculator, BMI Charts and a free body mass index calculator for Windows to help users **calculate bmi**.

Created By: +Simon Hartley.