## Height Percentile Girl Calculator

For instance, a fetus in the 10 th percentile for weight and the 25 th percentile for height is probably going to have a petite frame. To find out if you're a healthy weight for your height, work out your body mass index (BMI). It can also convert between different units of height. Child BMI Categories are based on the BMI percentile, which varies with gender and age. LMS Parameters for Girls: Weight for Height. PERCENTILES OF HEIGHT-FOR-AGE BOYS AGED 0 TO 72 MONTHS 45 55 65 75 85 95 105 115 125 0 6 12 18 24 30 36 42 48 54 60 66 72 Age (months) Height (cm) Percentile 75 90 97 50 25 10 3 Anthropometric Study on Pre-School Children in Singapore, 2000 National Healthcare Group Polyclinics. Use the healthdirect BMI calculator to work out your BMI. BMI is often used as a screening tool to decide if your weight might be putting. Measure the height and weight of patients under 90 lbs. The percentile is the number that ranks your child's size among other children of the same gender and age. (Up until babies are 36 months old, doctors will measure weight, length, as well as head circumference). The percentile shows how a child’s head circumference, weight, and height compares to other children. there is a simple relationship between weight, height and bmi, so if the mean bmi is available along with the standard deviation of the bmi for a given population, then that will give best results. What is Percentile. 5 centimeters from the number if using metric. Height-for-Age Percentiles and standard deviation scores It is customary to express height values in terms of percentiles. The most important tool for assessing and monitoring a child's growth is the growth chart which plots height (length), weight, and head circumference. Percentile conversion from Z-Score is done by table look-up in the standard Normal Table. 74 : 3rd -1. For example, a percentile value of 60 for the height measurement means the girl is taller than 60% of other girls and shorter than 40% of other girls. Enter several estimated weights (EFW) at different gestational weeks and we will provide your baby's growth curve. Calculate Your Body Mass Index. Percentile charts are used as guide when growth and weight gain are a concern. The average for a 6-year-old girl just 45 inches. (Up until babies are 36 months old, doctors will measure weight, length, as well as head circumference). My first born son was in the 95 percentile in height for a long time, he is 20 now 5 foot 10. Baby is 97th percentile for height but 30th for weight? (Girl) genetics?: I'm a bit worried about my daughters weight ? Although she's happy and is hitting all her mile stones I'm wondering if there's anything wrong she's 5. Experts are now claiming that your Waist/Height Ratio (WHtR) is a far more accurate way of measuring healthy weight than the traditional Body Mass Index (BMI). Due Date Calculator Your baby is a girl; So if your 2-year-old son is in the 75th percentile for height and 50th percentile for weight, that means he is taller than 75 percent of boys his. A girl who is short in stature may have Turner syndrome. The calculator is valid for babies, infants, toddlers and preschoolers with an age range of birth to five years. In women, below 17 is extreme low body fat; between 30 to 33, high body fat; and above 34, extremely high body fat or obese. This is why BMI for children, also referred to as BMI -for-age, is gender and age specific. 9, placing the BMI-for-age at the 87th percentile for boys aged 13 years 6 months. Calculate Your Ideal Weight. Height Calculator. 32 z distribution and height: Elena, a 15-year-old girl, is 58 inches tall. 99 with Free shipping. People's heights, weights and IQ scores are all roughly bell-shaped and symmetrical around a mean. Toddler 98th percentile in height and weight - anyone one else? So concerned :(: We have a 21m old beautiful girl, who is very talkative, intelligent and has reached all milestones very early. Percentile charts are used as guide when growth and weight gain are a concern. This doesn’t mean you scored 80% of the questions correctly. 05 : 77th : 0. Height-age and weight-age Estimating expected weight Estimating ideal body weight Midparent height. BMI is a parameter calculated from height and weight and only indirectly indicates the amount of fat in the body. Based on the height and weight entered, the BMI is 22. One centimeter is equal to 0. This number plus or minus 10 centimeters is the range in which you could expect your daughter to fall. "What's the right weight for my height?" is one of the most common questions girls and guys have. Our growth percentile calculator reveals how your child's size compares with other boys or girls the same age. For girls: Take each parent’s height using centimeters and add them together. Use above predicted mean height to mark growth chart. 9 respectively. Instructions 4 Month Old Baby Weight And Height Percentile See this growth chart for girls between 12 and 24 months to make sure your daughter's will check that she continues growing according to her percentile growth curve. Rather it means that Siobhan is taller than 75 percent of the healthy, well-nourished girls her age in the Ohio Study between 1963 and 1975. • Infant Growth Percentile Calculator - New Born to 36 Months - Baby growth percentile calculator to obtain an infants weight and height percentile in comparison to a national average. Height Percentiles - United States. Please click here to view a BMI chart which includes weight and heights appropriate for children. Her predicted height is 183. $1 0/0 0 4 Same owe CA Jess ðLJ. Below the 2nd percentile curve (P 2) is 2% of the population of the same age and gender. A percentile shows the relative position of the child's BMI, Weight, or Height among children of the same sex and age. BMI Calculator. G7 7/0 r S. Baby Girl Growth chart. Her weight is between the 10-25th percentile and her height is on the 50th percentile for her age which is normal. Enter several estimated weights (EFW) at different gestational weeks and we will provide your baby's growth curve. In general, below the 10th percentile is too low; above the 90th percentile is too high. The calculators are not for use with pregnant or lactating women or children. Tanner Stage Calculator for Girls Version 2. If your child is short or tall for their age, BMI-for-age may be the most appropriate measure of their weight status. Then at two months she was 75th percentile, and now she's 95th. Age-appropriate body mass index in children with achondroplasia: interpretation in relation to indexes of height1–3 Julie E Hoover-Fong, Kerry J Schulze, John McGready, Hillary Barnes, and Charles I Scott. Roughly 1% of US women are 6 feet tall or taller, which makes a bit over 1. Because of possible rounding errors in age, weight, and height, the results from this calculator may differ slightly. The formula below is used. Results: Results for the 50th, 90th and 95th percentile of SBP and DBP for 6245 boys and 5707 girls were presented by age and height percentiles. The group is divided into percentiles that reflect whether a child is at a healthy weight, underweight, overweight or obese. Some children are born to be tall and thin; others will always be somewhat stocky. (standing ht and wt. But that doesn't mean there's something wrong if your toddler falls into the 75th percentile in height and the 25th percentile for weight. Helps you determine the weight-age percentile of your child. then click the button “Calculate” get the result. My baby is 16 months old which food is better my. An ideal height weight chart for kids is displayed along with the result allowing you to compare the height and weight of your kids with kids of same age. Menstruation begins, almost always after the peak growth rate in height (average age is 12. CDC Growth calculator for 0 to 36 months. This height/weight chart is only suitable for adult men and women. Height Calculator. A BMI between 18. A 4-year-old boy who is 103cm tall would be in approximately the 75th height percentile (find the point where the age and height intersect and choose the nearest curve). For example, a person who weighs 180 lbs and is 5'5" would have a BMI of 30. The thicker red line in the center of the chart is the 50 th percentile line, (like the average), which shows that 50% of Girls have Height (or stature) shorter than the line, and 50% are taller. It also includes the percentile for height and weight to help you compare the result to the general population of babies having the same age group. Furthermore, the weight percentile calculation estimates how your weight compares to a population of other people of similar gender, age and height. For example, a percentile value of 60 for the height measurement means the girl is taller than 60% of other girls and shorter than 40% of other girls. Suppose we want to find the proportion of the area under the normal curve that lies below z =1. com:Pediatrics BMI calculator, for your height and weight, you are in the 65th percentile for your age. The calculator presents numeric results, displays a graphic that shows the. Make sure you’re at the right page for either a male or female baby, then enter your baby’s measurements of weight, length and head. Kids are usually around the same height as their parents. You'll see percentile charts customized for your child. These values are compared with existing Chinese and US recommendations. In this calculator, the subject's blood pressure percentiles are based on age and height percentile. If a girl is at the 40th percentile for weight, she weighs more than 40% of girls at that same age. (See Baby and toddler growth charts for girls here. Measure the height and weight of patients under 90 lbs. Percentiles refer to the position of a child among a group of normal children ranked by size. Looking at percentiles helps you focus on healthy growth without being distracted by normal differences. Blood Pressure Percentiles for Boys (2 - 17 years)Assesses whether child has healthy blood pressure for their height, age, and gender. BMI-for-age percentile shows how your child’s weight compares to that of other children of the same age and sex. Set 1 has the outer limits of the curves at the 5th and 95th percentiles. calculator and generate your baby girl growth chart, infant boy growth chart, height, weight, body mass index and craneal perimeter percentile, please enter data:. The average length of a baby boy at six months is approximately 26 1/2 inches (67. 8 cm and a retarded BA of 10 years. P1 = 1st percentile P10 = 10th percentile P50 = 50th percentile = the median. The group is divided into percentiles that reflect whether a child is at a healthy weight, underweight, overweight or obese. To find out what his percentiles are, start by using the CDC growth chart for boys from birth to 36 months. Blood Pressure Levels for Girls. My first born son was in the 95 percentile in height for a long time, he is 20 now 5 foot 10. percentiles for age/sex/height. Not Sure? Estimated Energy Needs = Calories Per Day* How to interpret Estimated Energy Needs **Select "yes" if the child's BMI is at or above the 85th percentile for their age. BMI is a measure which takes into account a person’s weight and height to gauge total body fat in adults. A percentile shows the relative position of the child's measurement (such as Blood Pressure or Height) among children of the same sex and age. You see, neither Wesley or I are tall people. Changes in Boys. The toddler and infant growth chart page has links to growth charts for boys and girls from birth to 2 years of age and for boys and girls over 2 years of age, as well as head circumference charts for infants under 2 year of age. 35 inches) on either side of this calculated value (target height) represents the likely range for their anticipated adult height (+/- 2 stadard deviations around target height). Stage I hypertension is defined as either Systolic BP or Diastolic BP between the 95th percentile and the 99th percentile plus 5 mmHg. Stats of height percentile Calculator are only for informational purposes not for medical purposes. of babies across the world in terms of ‘percentile’. The percentile shows how your child's weight compares to other children. BMI varies with age, dropping to a low point at four to six years of age and then increasing throughout childhood. percentiles other than these, follow steps 1–4 as described in Appendix B. Do you have a girl?. The formula used to calculate BMI can be found here: BMI Formula. Doctors often use a percentile calculator to assess an infant's weight and height percentile in comparison to national averages. These measurements are then compared with the standard (normal) range for children of the same gender and age. The bottom of the chart shows ages, from 2 to 20 years. For example, a boy at the 25th percentile for height is taller than 25% of boys his age. If your child is short or tall for their age, BMI-for-age may be the most appropriate measure of their weight status. 80 inches with a standard deviation of 2. CDC Growth calculator for 0 to 36 months. been found to occur later in girls with CF (14. Curves on the chart indicate the percentiles for length-for-age and weight-for-age. Percentiles also enable a physician to compare height to weight to determine proportionate growth. As long as they are not actually losing weight, and they have no other symptoms, such as persistent diarrhea, vomiting, poor appetite or having frequent infections, then it may be normal to move down on your growth percentiles. He is 37 pounds and in the 90th percentile for weight. {{configCtrl2. It can also convert between different units of height. Use the healthdirect BMI calculator to work out your BMI. On average, female height doesn't grow after 15 or 16 years age, whereas the male growth continues for approximately 3 more years, till about 18-20 years of age. weight alone, or height alone does not have the same sd or mean as the bmi, which is the value for which you want to determine percentiles. Stats of height percentile Calculator are only for informational purposes not for medical purposes. Track and chart stature/height, weight, and head circumference growth metrics over time. You can calculate midparental height by adding the mother's and father's height in inches. A quarter of kids fall above these numbers…. Kids are endlessly compared to their parents and other family members. In some instances it may be of interest to compute other percentiles, for example the 5 th or 95 th. In general, below the 10th percentile is too low; above the 90th percentile is too high. See the example at right and the accompanying instructions. Percentiles, Px, divide a set of data into 100 equal parts. This would mean that your daughter weighs the same or more than 20% of all 1 –year-old girls around the world. This would give you the idea whether its time for you to meet your pediatrician. CDC Growth calculator for 2 to 20 years. Free online body fat calculator and information about the U. Healthy weight ranges fall between the 5th and 85th percentile on a BMI chart. Obese: BMI at or above the 95th percentile for age, gender, and height. Child height percentiles are only available for U. $1 0/0 0 4 Same owe CA Jess ðLJ. weight alone, or height alone does not have the same sd or mean as the bmi, which is the value for which you want to determine percentiles. Z-Scores, the Central Limit Theorem and areas under a Normal Curve July 9, 2019. 3 cm while a normal adult woman at the 97th percentile is 174. In this calculator, the subject's blood pressure percentiles are based on age and height percentile. Cancer Chemother Rep 1970 54:225-35. This BMI Calculator for men and women is easy to use and gives you information about your body mass index. acid which correlated with height percentile. Adult Height-Weight (Metric) Boys, Ages 2-20 Years Girls, Ages 2-20 Years BMI with Chart Boys Weight by Month Girls Weight by Month These charts can help answer the question 'How much should I weigh' for adults and children. In adults aged 20 and older, BMI is based on the standard weight status categories, which are the same for both men and women of all ages and body types. Centimeters to meters conversion. For girls: { [ Father's height (in. 5 inches (6. Medical Calculators, Criteria Sets and Decision Trees. A 4-year-old boy who is 103cm tall would be in approximately the 75th height percentile (find the point where the age and height intersect and choose the nearest curve). Peak flow readings will be higher when patients are normal and lower when the airways are constricted. As long as it is relative and comfortable, there is nothing wrong with these discrepancies. You may also hear that she is in a certain percentile for height and a certain percent for weight. DD was born in the 50th percentile for weight, but gradually went down to the 2nd percentile by 11 months. The doctor always said she was 90% on her chart and I guess I should have asked what that meant (good or bad). "What's the right weight for my height?" is one of the most common questions girls and guys have. You can use of child height prediction calculator above to find out the approximate height of your boy or girl child as an adult. " For me to rank in the 50th percentile, which is average, I would have to weigh 139 pounds. To give you a benchmark, here are the values from the 25th percentile to the 75th percentile for weight and height – meaning that half of kids fall within these ranges. The percentile tells you what percentage of children that have a height less than your child. So for example, if your baby is in the 25th percentile for weight, she could be in the 50th percentile for height. You just have to enter your child’s weight, height, and head circumference along with gender and age to calculate the percentile for each parameter (weight, height, or head circumference). For research purposes, the standard deviations in appendix table B–1 allow one to compute BP Z-scores and percentiles for girls with height percentiles given in. Answer to Consult chapter 4 in your textbook for graphs showing how to calculate stature and weight by age percentiles for boys and girls. Online Clinical Calculators, growth charts for children, newborns, premature babies, and Down syndrome. This places an 8 year old at the 20th percentile. In the case of sample data, the percentiles can be only estimated, and for that purpose, the sample data is organized in ascending order. The simplest height calculator (second one) draws on the fact that children inherit genes from both parents. Children's Growth Calculator. For both children and adults, the Weight percentile calculation considers both chronological age and median-age-for-height. 64 : 51st : 0. 2000 CDC growth charts to report growth metric percentiles and Z-scores on children and adolescents from 2 to 20 years of age. One inch is equal to 2. BP (blood pressure) levels for girls by age and 50th percentile of height. Use this height percentile calculator to calculate how tall or short you are relative to the general population or to people of the same gender, age, and country you are in. The thicker red line in the center of the chart is the 50 th percentile line, (like the average), which shows that 50% of Girls have Height (or stature) shorter than the line, and 50% are taller. Body mass index (BMI)-for-age percentile chart for boys and girls. Between 1995 and 2011-12, the average height for men increased by 0. Percentiles are provided for Z Scores between -3. You first look at the CDC height by age chart to find your child’s height percentile. Step 1 Obtain and record accurate height and weight of the child. The percentile shows how your infant's length compares to other infants. As long as they are not actually losing weight, and they have no other symptoms, such as persistent diarrhea, vomiting, poor appetite or having frequent infections, then it may be normal to move down on your growth percentiles. Download Boys. 5 inches and in the 46th percentile for height. INSTRUCTIONS for determining and recording BMI-for-age percentile (See example on page 2) 1. Blood Pressure Levels for Girls by Age and Height Percentile Systolic BP (mmHg) Diastolic BP (mmHg). CDC Growth calculator for 2 to 20 years. calculator and generate your baby girl growth chart, infant boy growth chart, height, weight, body mass index and craneal perimeter percentile, please enter data:. From standard to specialty, each chart indicates the statistical norms for various growth ratios. Confused about score percentiles? Don't be! If you've gotten back your score report, whether it's for the SAT, GRE, LSAT or another standardized test, and you're wondering what that percentage posted front and center on your score report actually means, then here's your explanation. What we care about most is the trend at which your baby or child gains weight, height, or head circumference. Normal BP: SBP and DBP <90th percentile Recheck in 1 year. To plot your child’s BMI-for-age percentile, you must first calculate his/her BMI. 5 inches and in the 46th percentile for height. For BMI calculations on children and baby girl and boy charts, please refer to the percentile and standard children growth website. 645 SD, and the 99th percentile is 2. Helpful, trusted answers from doctors: Dr. On that chart, i'd say she's just over the 75% percentile. You can calculate the BMI percentile using the CDC Calculator or a chart (Boys/Girls; Niños/Niñas). The doctor always said she was 90% on her chart and I guess I should have asked what that meant (good or bad). Use the TDEE calculator to learn your Total Daily Energy Expenditure, a measure of how many calories you burn per day. xls files for Body Mass Index (BMI) Percentile for Girls and Boys Ages 2 to 20. Besides the above calculator, percentiles can also come from growth charts. You see, neither Wesley or I are tall people. Note: This is not meant as substitute for regular checkups with your doctor or pediatrician. Free online body fat calculator and information about the U. The numbers in the parentheses, e. PERCENTILES OF HEIGHT-FOR-AGE BOYS AGED 0 TO 72 MONTHS 45 55 65 75 85 95 105 115 125 0 6 12 18 24 30 36 42 48 54 60 66 72 Age (months) Height (cm) Percentile 75 90 97 50 25 10 3 Anthropometric Study on Pre-School Children in Singapore, 2000 National Healthcare Group Polyclinics. Blood Pressure Levels for Girls by Age and Height Percentile Systolic BP (mmHg) Diastolic BP (mmHg). In general, healthy term infants and children grow about 2. Height-for-age and Weight-for-age percentiles WHO GROWTH CHARTS FOR CANADA NAME: DOB: RECORD # 10 15 20 25 10 15 20 25 30 40 45 50 55 60 65 70 75 80 85 90 AGE (YEARS. percentile One of 100 equal parts in an ordered sequence of statistical data. BMI A number doctors use to help judge your risk of illness. Lots of parents wonder whether their child is bigger or smaller than other kids the same age. Many of you will literally go off the scale. Percentiles are NOT the same as Percentages. Standard Height and Weight Chart for Baby Girls Are you worried she isn’t tall enough or doesn’t weigh enough as a normal baby? If yes, then check out growth chart for baby girl. percentiles other than these, follow steps 1–4 as described in Appendix B. Height Percentile Calculator, by Age or Country 107 Below is a height percentile calculator. Army body fat standards, allowable percentage for reqruits and active personnel, and advice for reducing body fat. The BMI calculator for kids helps you calculate BMI for girls and BMI for boys, up to and including 9 years of age. In this calculator, the subject's blood pressure percentiles are based on age and height percentile. A 4-year-old boy who is 103cm tall would be in approximately the 75th height percentile (find the point where the age and height intersect and choose the nearest curve). Between six months and one year, that slows down a bit to about a 1/2 inch per month. An obese child?" depends on the height. For boys, the 50th percentile of weight is 100. The Normal Model We can use STATA to calculate similar values to those found in the Normal Table in the back of the book. The image shown below is a simple way to calculate your daughter’s ideal height and weight from birth to five years. Use our baby's growth calculator to help you determine how your baby is growing and what percentile your baby is in based on growth charts. Z-Scores, the Central Limit Theorem and areas under a Normal Curve July 9, 2019. Use our children's growth calculator to help you determine what percentile your child is in based on growth charts. DATE AGE WEIGHT HEIGHT BMI* COMMENTS. Obesity is most commonly calculated using BMI. Munson what this means. Values beyond these extremes return percentiles of 0. Waist to Hip Ratio Calculator Your waist to hip ratio is an important tool that helps you determine your overall health risk. The formula used to calculate BMI can be found here: BMI Formula. Explain to Mrs. And I'm really short at 5'2. Spoiler Alert! If you're a 6'4" (193cm) male or 5'10" (178cm) female then you're already in the 99th percentile. How calculations are based. It is very common for a new parent to wonder if their child is developing properly, specifically how large or small they are in comparison to other children the same age. At the lowest red line, (5 th percentile), only 5% of the population of Girls are shorter. To find out if you're a healthy weight for your height, work out your body mass index (BMI). Calculating The Final Height Of Children 3 Replies In my previous post, I tried to take a guess at the thinking, intentions, rationalizations, justifications, and reasons why some people, mostly females, will always choose the taller mate partner if they had a choice in mate selection. My first daughter was 7. As far as height goes, it just probably means that she is temporarily slowing in her growth a bit. They have a bone age of 12 so it doesn't appear they have constitutional growth delay. But what exactly is a percentile? Is the 100th percentile ideal, or is that like. It indicates whether you should lose weight or not. It gives you an idea of whether you’re 'underweight', a 'healthy' weight, 'overweight', or 'obese' for your height. Predicted heights are usually within 4 inches, taller or shorter, than actual adult height. A child’s height, body mass, and other. This free height calculator predicts a child's adult height based on linear regression analysis. Step 1 Obtain and record accurate height and weight of the child. In it, we provide the BMI formula using the English system and give an overview of what the results mean. Someone could be 75th percentile weight and 50th percentile height and they might look slim. You see, neither Wesley or I are tall people. Body mass index, or BMI, is a way to help you figure out if you are at a healthy weight for your height. Children and teenagers need to grow, but they are healthiest if they stay within a certain weight range as they grow. For a more exact weight, see your doctor. Infant's Growth Calculator. Percentiles can also be determined with a height percentile calculator. To include all growth stages, a theoretical curve was created with the data on the 50th percentiles of weight and height for each age, equivalent to the 50th percentile of the weight-for-height curve. This BMI calculator will help you determine if your child is at a healthy weight. Plus, there are different charts based on sex, since body fat levels are different in boys and. This places an 8 year old at the 20th percentile. The standard normal distribution can also be useful for computing percentiles. From standard to specialty, each chart indicates the statistical norms for various growth ratios. BMI is one type of tool to help health professionals assess the risk for chronic disease. Enter Age, Height, Gender and Race. Cancer Chemother Rep 1970 54:225-35. According to the Center for Disease Control, healthy teens should not measure weight exclusively but also take into consideration body mass index. Children's Growth Calculator. Blood Pressure Levels for Girls. The Body Mass Index (BMI) calculator is for the average adult between the ages of 20-65. My son was tall and lean. Just enter your child's weight, height (aka length), and head circumference, and we'll calculate a percentile for each. Use our children's growth calculator to help you determine what percentile your child is in based on growth charts. A normal range for a 5-year-old girl is 40 to 47 inches tall. Besides the above calculator, percentiles can also come from growth charts. 9 respectively. It is important that you track the baby’s growth with the baby growth chart which gives measurement between 3rd and 97th percentile to know whether his development is according to the pattern or not. The k-th percentile of a distribution corresponds to a point with the property that k% of the distribution is to the left of that value. If a value in a range of values falls in the 20th percentile, there are 19 lower and 80 higher. Peak flow readings will be higher when patients are normal and lower when the airways are constricted. Army body fat standards, allowable percentage for reqruits and active personnel, and advice for reducing body fat. 01 In Brief. Quiz 5 Key Math 1040{1 July 13, 2012 Directions: Show all work for full credit. What we care about most is the trend at which your baby or child gains weight, height, or head circumference. Head Circumference: Girls: BMI is based on height, weight, age and gender; a child of any age whose BMI is between the 85th to 94th percentile is considered overweight; a child whose BMI is in the 95th percentile or above is considered obese. For a girl's future height, subtract 2½ in (or 6,5 cm):. Curves on the chart indicate the percentiles for length-for-age and weight-for-age. This free height calculator predicts a child's adult height based on linear regression analysis. Normally in the adult population, the Body Mass Index (BMI), which is a measure of body fat based on height and weight that applies to adult men and women, is used to calculate their ideal weight. Vietnamese and Asian growth charts, and their use for babies and children adopted from Vietnam. Your child's size will be given 2 numbers — a BMI value and its percentile. Based on what we know, the average height for girls at this age is 63. Knowing your child's BMI helps you determine what measures. In some instances it may be of interest to compute other percentiles, for example the 5 th or 95 th. For example, if your 1-year-old girl weighs 8 kgs, then she is in the 20 th percentile of weight. On the original chart, the top set of lines is for figuring out height percentile and the bottom set of lines is for the weight percentile. The Body Mass Index (BMI) calculator is for the average adult between the ages of 20-65. 11 and 19in (very normal) at birth and swiftly moved below the 5th percentile for weight and 60th for height. Determine BMI-for-age percentile (%ile) by plotting BMI value on the CDC/NCHS “BMI-for-age percentiles” boys or girls growth chart. BMI is a number calculated by dividing a person’s weight in kilograms by his or her height in meters squared. BMI compares your weight to your height, and is calculated by dividing your weight (in kilograms) by your height (in metres squared). 3 or 4 inches) Mean Height in centimeters +/- 5 centimeters (some use 8. Nature works that way. Body mass index (BMI)-for-age percentile chart for boys and girls.