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Ultimately, the BMI calculator indicates a number by dividing one’s body weight expressed either in kilograms or in pounds with the square of their height in meters or inches, this number is, then, fit into one of five categories supposedly revealing if the individual in question is underweight, normal weight or overweight. is necessary to multiply the entire formula by 703 to transform from pounds and inches to kilograms and meters.
#Webmd body mass index calculator full
Finally, BMI may not be as accurate in providing a full picture of body weight in people who are of any ethnicity other than white.It is far less useful for those who are very short or very tall. BMI often overestimates obesity in shorter people (under 4’1”) and underestimates it among taller people (over 6’2”).This may result in a lower BMI, but the person may not be underweight. In addition, people with physical disabilities who are unable to walk may have muscle wasting.On the other hand, older women who have a loss of muscle mass due to aging may have their body fat percentage underestimated.This means an athletic person may be categorized as obese based solely on body mass index, but they are actually a healthy weight.
#Webmd body mass index calculator professional
Women who are muscular, such as bodybuilders, boxers, and other professional athletes, may have their body fat overestimated using BMI because muscle is denser than fat.
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Pregnancy Weight Gain Chart Pre-Pregnancy BMI
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BMI Chart for Women BMIįor people who are pregnant or plan to become pregnant, the recommended weight gain during pregnancy may be calculated using a pre-pregnancy BMI. BMI is calculated from the weight and square of the height: BMI = body weight (in kg) ÷ height (in meters) squared. It is a calculation based on height and weight that can provide a better estimate of total body fat than weight alone.įor most adult women and men, a normal body mass index is between 18.5 to under 24.9.īody mass index is an expression of the relationship between a person’s height and weight as a single number that is not dependent on frame size. For most adult women and men, a normal body mass index (BMI) is between 18.5 to under 24.9.īody mass index, or BMI, is a tool doctors use to determine if a person is overweight, and to what degree.