To assess weight, many doctors use a height/weight calculation known as a Body Mass Index. It is a method of expressing body weight taking into account height differences.

Calculate your BMI by completing the simple test below. Enter your height using the drop down selectors, enter your weight, and then press the "Calculate" button

A guide to the BMI categories is:

This test is only one measure of health. Pregnant women, children and teenagers who are still growing, and very stocky or muscular people shouldn't use this calculator because it will not give an accurate result.

This test is meant only as a guide only. If you are worried about your weight, you should consider visiting your GP to discuss weight problems.

An imperial version of this calculator is also available. Please click here for the imperial Body Mass Index