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 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.A BMI over 25 is classified as overweight and a BMI over 30 is classified as obese, with increased health risks. But does being over the normal/healthy range really This site has moved to Please update your bookmarks and click here to visit the new site.Body Mass Index (BMI) is a person's weight in kilograms divided by the square of height in meters. A high BMI can be an indicator of high body fatness. BMI can be 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.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 Use the BMI calculator to find out if you or your child's weight is healthy. As well as checking your BMI, measure your waist to check you're not carrying too much What's a Healthy Waist Measurement? Women should aim for a waist measurement below 35 inches, and men below 40 inches. A waist measurement of 35 or more in The body mass index (BMI) or Quetelet index is a value derived from the mass and height of an individual. The BMI is defined as the body mass divided by the square of