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#Teen bmi calculator how to#

Your pediatrician can advise you on ways to strategies that focus on developing and supporting healthy habits at home. The best way to know your child's BMI is to have your child's pediatrician measure and discuss the results with you. Standardized growth chart for a visual comparison, and to help track growth trends over time. For example, a BMI-for-age percentile of 65 means that the child's weight is greater than that of 65% of other children of the same age and sex. children of the same age and sex to determine what's called a BMI percentile. This number is then compared to other U.S.

Centers for Disease Control and Prevention: There are also BMI calculators available, such as this one from the U.S. Multiply their height (in inches) by itself Multiply their weight (in pounds) by 703Ģ. Your pediatrician will measure your child's height and weight with their shoes and heavy clothes off, and then calculate BMI with this formula: Body-Mass Index Formulaġ. Instead of just using the calculated BMI number as we do with adults, BMI percentiles consider children's growth and development to figure out if they are within their healthy weight range. In addition, male and female children have differences in body fat distribution, within a range of normal body shapes and sizes. We know that children are constantly growing, and do so at different rates. It is puts people in weight categories such as underweight, overweight, and obesity. This number serves as a quick estimate of body fat. In simple terms, a person's Body Mass Index or BMI is a calculated measurement of someone's weight in relation to their height. But what does it mean, and why is it important to your child's health? Read on for information about how BMI is calculated, what ranges pediatricians like to see in children, and why BMI-while an important screening measurement of health-can have limitations. Please seek further advice from your GP.You may hear the term body mass index or “BMI" during your child's checkups, or even at your own health visits. If you're suffering from an eating disorder, the BMI calculator results do not apply. Your can use your BMI result as a starting point for further discussion with your GP about your weight and your general health.įind out more in How your GP can help and check out the Change4Life website for practical tips on staying healthy as a family. However, the BMI is a relatively straightforward and convenient method of assessing someone's weight.

adults who lose muscle as they get older may fall in the "healthy weight" range even though they may be carrying excess fat.

very muscular adults and athletes may be classed "overweight" or "obese" even though their body fat is low.

The adult BMI does not take into account age, gender or muscle mass. The BMI can't tell the difference between excess fat, muscle, or bone. Your BMI can tell you if you're carrying too much weight but it can't tell if you're carrying too much fat. If you're concerned about your child's weight, contact your GP who may be able to refer you to your local healthy lifestyle programme for children, young people and families. Measuring waist size is not routinely advised for children because it doesn't take their height into account. For example, a girl on the 75th centile is heavier than 75 out of 100 other girls her age. Find out more in very overweight childrenĪ child's BMI is expressed as a "centile" to show how their BMI compares to children who took part in national surveys. If you're concerned about your child's weight, see your GP.

#Teen bmi calculator how to#

Get tips on how to encourage your child to be more active and eat well

healthy weight: between the 2nd and 91st centiles.

underweight: on the 2nd centile or below.

The BMI calculator works out if a child or young person is: Obese children are thought to be at increased risk of a variety of health conditions, and they're also more likely to be overweight or obese as adults. For children and young people aged two to 18, the BMI calculator takes into account age and gender as well as height and weight.