If the height is available in centimeters, it is divided by 100 to obtain the height in meters. Then the weight in kilograms is divided by the result (square of height in meters). The height in meters is first multiplied by itself (squared). This is called the Imperial BMI Formula.īody Mass Index is measured using kilograms and meters with this given equation:īMI = (weight in kilograms/(height in meters x height in meters)). This gross result is again multiplied by 703 to arrive at the final result which is nothing but the BMI. The weight in pounds is then divided by the result (square of height in inches). The height in inches is first multiplied by itself (squared). Breathe out naturally before taking the measurement.Imperial Body Mass Index (BMI) Formula: Body Mass Index is measured using pounds and inches with this given equation:īMI = (weight in pounds/(height in inches x height in inches)) x 703.Enter height in inches, feet and inches, meters or centimeters. Wrap a tape measure around your waist midway between these points. BMI Calculator for men, women and children finds Body Mass Index given weight and height.Find the bottom of your ribs and the top of your hips (just above your belly button). ![]() Use measurements in the same units (for example, centimetres or inches).Ī waist to height ratio of 0.5 or higher means you may have increased health risks such as heart disease, type 2 diabetes and stroke. To calculate your waist to height ratio, measure your waist and divide it by your height. Measuring your waist to height ratio can tell you if you have excess tummy fat, even if you have a healthy BMI. You may want to see a GP for help and advice. If you want to lose weight, you can find more information at NHS Better Health. Healthy weightįind out more about having a balanced diet and find fitness videos you can try at home to maintain a healthy weight. If you have an eating disorder, the BMI calculation results do not apply. BMI weight ranges Underweightīeing underweight could be a sign you're not eating enough or you may be ill. This means muscular adults and athletes may be classed as overweight or obese even though their body fat is low.Īdults who lose muscle as they get older may fall into the healthy weight range even though they may be carrying excess fat. BMI is calculated by dividing your weight in pounds by the square of your height in inches, and then multiplying by a conversion factor of 703, according to the CDC. The BMI calculation does not include muscle mass, which weighs more than fat. If you're concerned about your child's weight, see a GP.īlack, Asian and other minority ethnic groups have a higher risk of developing some long-term conditions, such as type 2 diabetes.
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