Body Mass Index

Use our BMI calculator to check if you are of a healthy weight for your height.

Your Height & Weight?

Height: cm or ft inches

Weight: kg or st lbs

Calculate my BMI

Other Factors

BMI is only one factor in estimating a persons health. Body fat, cholesterol levels, blood pressure, physical activity and nutrition all play an important part.

Severely Underweight (less than 16.4)

Being severely underweight can place your health at serious risk. Without an ample amount of nutrients and fluids in your body you would be at risk of becoming extremely ill.

Underweight (16.5 - 18.4)

Being underweight can be dangerous in some circumstances. If the body is not supplied with the right amount of nutrients and fluids you could become ill.

This range is associated with good health. With a continuation of a well balanced diet and regular exercise it will minimise your risk of most health related problems such as heart disease, certain cancers, osteoporosis and many more.

Overweight (25 - 29.9)

Your health would benefit from losing some weight. Being overweight can be associated with many problems such as high blood pressure, heart disease, strokes, certain cancers and other types of illnesses, including types of diabetes.

Placing yourself on a steady well-balanced diet with regular exercise will help you to lose weight. It is not a fast process, so getting advise on the correct diet and exercise would be wise.

Obese Class I (30 - 34.9)

Being obese you would be wise to lose weight. You would benefit from professional advice on dieting and exercise. Obesity is linked with heart disease, high blood pressure, back pain, strokes, certain cancers, type 2 diabetes and many other illnesses. Combining a healthy diet with exercise could add years onto your life.

Obese Class II (35 - 39.9)

It is very important that you do not gain any more weight. Being largely obese you have potentially opened yourself to type 2 diabetes, heart disease, fertility problems, back pain, certain cancers, strokes and many more illnesses.

Gaining professional advice on dieting and exercise would be very beneficial.

Obese Class III (40 or more)

You are extremely obese. You would benefit from specialist medical advice. Getting placed on a specific diet and exercise program is essential. It is very important that you do not gain any more weight.

You have put yourself at extreme risk of high blood pressure, heart disease, fertility problems, breathlessness, cancer, osteoarthritis, type two diabetes along with many other health problems. Not to mention a shortened life span.