Body Mass Index ‘BMI’ is used to determine whether you are in a healthy weight range for your height. It is useful to consider BMI increases or decreases as weight outside the ‘healthy’ range may increase your health risks. What’s BMI? Body Mass Index (BMI) is a calculation of the ratio between your weight and your height. The formula is used to determine the amount of body fat you carry to give you an idea of whether you’re underweight, a healthy weight, overweight, or obese for your height. How to Calculate your BMI BMI is calculated by dividing your weight in kilograms by your height in metres squared. There are plenty of online calculators available to help assess your score such as CLICK HERE however, its strongly advised to consult a doctor, nutritionist of medical professional for formal advice.