Simple Bmi Calculator

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

Understanding your BMI result

Underweight
Being underweight could be a sign you're not eating enough or you may be ill. If you're underweight, a GP can help.

Healthy weight
Keep up the good work! For tips on maintaining a healthy weight, check out the food and diet, and fitness sections.

Overweight
The best way to lose weight if you're overweight is through a combination of diet and exercise.

The BMI calculator will give you a personal calorie allowance to help you achieve a healthy weight safely.