BMI for Adults

BMI takes into account that people come in different shapes and sizes. That's why a range of BMIs is considered healthy for an adult of any given height.

A BMI above the healthy range indicates that you're heavier than is healthy for your height.
The ranges below only apply to adults. BMI results are interpreted differently for children.

BMI below 18.5: a score this low means that you may be underweight. There are a number of possible reasons for this. Your GP can help you find out more, and achieve a healthy weight.You can learn more by reading Nutrition for underweight adults.

BMI between 18.5-24.9: this is a healthy range. It shows that you're a healthy weight for your height. However, it's still important to eat a healthy, balanced diet and include physical activity in your daily life if you want to maintain a healthy weight.

BMI score of 25 or more: your BMI is above the ideal range and this score means you may be overweight. This means that you're heavier than is healthy for someone of your height. Excess weight can put you at increased risk of heart disease, stroke and type 2 diabetes. It’s time to take action. 

BMI of 30 or more: a BMI above 30 is classified as obese. Being obese puts you at a raised risk of health problems such as heart disease, stroke and type 2 diabetes. Losing weight will bring significant health improvements, and your GP can help. 

The above information is only seen as a guide and a reference from the NHS BMI indicators.

When using the calculator please submit your details in a collective format i.e. 5ft 10in = 70in / 10st 10lbs = 150lbs

BMI Calculator

Body mass index (BMI) is a measure of body fat based on height and weight that applies to adult men and women.

Imperial (lbs, inches)
Metric (kg, cm)