The situation is more complex in children, where the BMI threshold of obesity varies with age and sex. The charts below show how the BMI obesity threshold changes with age for boys and girls.

The actual calculation is your weight (in kilograms) divided by your height (in metres) squared but it's also easy to read on the chart. BMI can be divided into several categories and generally ...

your BMI would be 24.2. A BMI of 24.2 would place you in the "normal weight" category according to standard BMI ranges: ...

Fact checked by Nick Blackmer Body mass index (BMI) is one of the most common and criticized tools in medicine for evaluating ...

For more than 30 years we have been wedded to the Body Mass Index (BMI) as the sole criterion for deciding whether someone is obese or not. It is used by most health authorities to classify both ...

Comparative data for this calculator comes from the most recent national health surveys from the four constituent nations of the UK (see data sources below). We calculate BMI using the standard ...