## The BMI formula

Lambert Adolphe Jacques 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 *abused* 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.

## Table: Imperial BMI Formula

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

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

## Metric Imperial BMI Formula

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

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

## Calculate BMI & Find Weight Status

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

Below 18.5 | Underweight |

18.5 -24.9 | Normal |

25 - 29.9 | Overweight |

18.5 -24.9 | Normal |

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, United States Deparment of Health and Human Services weight status categories.