This NHS BMI calculator checks BMI (body mass index). Use it to calculate adult BMI and child BMI accurately, and get advice and information on healthy weight management.This site has moved to Please update your bookmarks and click here to visit the new site.This calculator provides BMI and the corresponding BMI weight status category. Use this calculator for adults, 20 years old and older. Learn more.BMI is a person's weight in kilograms divided by the square of height in meters. BMI does not measure body fat directly, but research has shown that BMI is moderately Calculate Your Body Mass Index. Body mass index (BMI) is a measure of body fat based on height and weight that applies to adult men and women.Check your body mass index (BMI) using our interactive healthy weight calculator, and find out how BMI can tell if you're a healthy weight.Body mass index, or BMI, is used to determine whether you are in a healthy weight range for your height. It is useful consider BMI alongside waist circumference, as Reproduced from: Obesity: Preventing and Managing the Global Epidemic, 2000, WHO, Geneva. For more information please go to the Healthy weight page"I have gone from being an overweight guy who didn't exercise, to now where I consider myself very fit, very healthy. This has turned my life around!"What is BMI? BMI stands for body mass index which is a formula which relates Body Weight to height. This enables people to determine whether they are at a weight