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BMI Calculator

Body mass index or BMI is an easy way to assess whether your weight is in the healthy range. It is a simple calculation using your weight and your height. Please use our bmi tracker (insert link) and refer to the guide below for your range.

A healthy range is the ideal for reducing future health risks.

Being underweight (a score below 18.5) can lead to a weakened immune system, fertility issues and osteoporosis.

A higher bmi score (over 25) can lead to health problems including high blood pressure, heart disease, strokes, Type 2 diabetes, osteoarthritis and joint pain. 

Your BMI classification sits in the underweight area. You should talk to your GP for support and advice and pay attention to increasing your calorie intake slowly from a balanced diet.

There are various resources on a healthy, balanced diet available - You can find information on the eatwell guide and other resources on our information pages and NHS live well for information on finding the cause of being underweight and tips on gaining weight healthily.

Your BMI classification sits in the overweight category. If you have a high muscle mass you may be healthy but sit in this range for BMI. If you aren't athletic or in a physical job, you may need to make some small changes to your diet and activity levels. Our Healthy Cornwall team can help you make changes, as every small step you take towards a healthy BMI has big long term health benefits.

Find out more about our Weight Management based programmes

Your BMI classification sits in the obese category. The higher your BMI score, the more important it is for you to make long term sustainable changes to your diet and activity. Our Healthy Cornwall team can help you make changes with support on creating a balanced diet, calorie intake and safe effective exercise.

Enquire about our weight management programmes today

Your BMI classification sits in the healthy weight category. Great work! Keep an eye on eating a balanced, varied diet using the eatwell guide and a healthy level of activity using our physical activity page ideas to maintain your weight and retain muscle mass as you get older.

If there are other aspects of your lifestyle you'd like help to make healthier, we have a variety of resources and support available, for example to help you quit smoking, drink less alcohol or become more active.

Find helpful resources and support to improve your health and wellbeing