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BMI calculator

Body Mass Index (BMI) is a measurement of your weight to height ratio. This BMI calculator helps you to calculate your Body Mass Index. By entering your details into the calculator you will be able to determine whether you are in the healthy weight range for your height.

It's important to note that a BMI calculator will not provide an accurate result for everyone. For example, if you are pregnant, have a very muscular frame or a physical disability that causes muscle wasting, then your result may not be accurate.

Height (cm) Weight (kg)

Height (cm)

Weight (kg)

BMI Result 20

Healthy Another BMI calculation

To calculate your BMI, simply enter your height (in cms) and your weight (in kgs). If you need to convert your measurements to metric click here.

Your height

To convert feet to metres, multiple the number of feet by 0.3048. For example, if you are 6 foot tall, you would be 1.83 metres tall.

Your weight

To convert pounds to kilograms, multiply the number of pounds by 0.454. For example, if you weigh 120 pounds, you would weigh 54.5 kilograms.

Weight categories by BMI are:

Underweight	BMI of less than 20
Healthy weight	BMI between 20 and 25
Overweight	BMI greater than 25

Underweight

If you are underweight (BMI less than 20) you are at increased risk of developing:

Malnourishment
Compromised immune function
Respiratory disease
Tuberculosis (an infection of the lung)
Digestive (stomach) disease
Cancer
Osteoporosis

Healthy weight

If you are a healthy weight (BMI between 20 and 25) you may like to find out more about how to stay healthy by eating well and enjoying regular physical activity. Click here for more information about healthy eating and healthy living.

Overweight⁶

If you are overweight (BMI greater than 25) you are at increased risk of developing:

Cardiovascular disease
High blood pressure
Diabetes
Osteoarthritis
Gall bladder disease
Certain types of cancer

REMEMBER that the BMI calculator gives a general indication of your weight range. It is not suitable for everyone. Please consult your doctor if you have any questions about your BMI.