The National Child Measurement Programme
Synopsis: Comprehensive charts displaying average height-to-weight ratios for children and teens, using both imperial (inches/pounds) and metric (cm/kg) measurements, organized by age. Pediatricians rely on growth charts to evaluate a child’s development pattern. Children need to grow, but they are healthiest if they stay within a certain weight range for their height and age as they grow. This is called a healthy weight for their age. The following tables provide a simplified overview of average height-to-weight and length-to-weight ranges for different age groups, presenting the information in an easy-to-read format without complex graphs.
Height to Weight Ratio Chart for Infants to Teens
Ian C. Langtree – Content Writer/Editor for Disabled World
Published: 2017/11/30 – Updated: 2024/09/23
Publication Type: Conversion, Calculation
Topic: Medical Calculators and Charts (Publications Database)
Synopsis: Comprehensive charts displaying average height-to-weight ratios for children and teens, using both imperial (inches/pounds) and metric (cm/kg) measurements, organized by age. Pediatricians rely on growth charts to evaluate a child’s development pattern. Children need to grow, but they are healthiest if they stay within a certain weight range for their height and age as they grow. This is called a healthy weight for their age. The following tables provide a simplified overview of average height-to-weight and length-to-weight ranges for different age groups, presenting the information in an easy-to-read format without complex graphs.
Why it matters: These height-to-weight ratio charts offer valuable reference data for parents, healthcare providers, and researchers to assess and monitor the growth patterns of infants, children, and teenagers. The charts, which include both imperial and metric measurements, present average height and weight ranges for various age groups from birth to 20 years old, separated by gender. While not a definitive measure of health, these charts serve as a useful tool for identifying potential growth issues or developmental concerns, allowing for early intervention when necessary. The information is based on data from reputable sources such as the World Health Organization and the U.S. Centers for Disease Control and Prevention, providing a reliable benchmark for understanding typical growth trajectories across different stages of childhood and adolescence – Disabled World.
Introduction
If you are over 20 years of age you will need to refer to our Adults Height to Weight Chart as our optimum height-to-weight ratio charts below only provide data from newborn babies to teenage girls and boys. The tables will give you a general idea of whether you are of average weight for your age and height without using complicated percentile graphs and charts.
Main Item
Height and weight ratio charts are not truly accurate measures or indicators, especially for younger children and teenagers, as they represent only a rough average and should be used in conjunction with a BMI calculator for kids. Our height-to-weight charts below display both Metric and Imperial measurements, i.e., Pounds to Kilograms and Inches to Centimeters. If you need to perform weight conversions visit our Stones, Pounds, Kilograms Conversion Chart
- Female: 1 to 11 Months
- Female: 1 to 2 Years
- Female: 2 to 12 Years
- Female: 13 to 20 Years
- Male: 1 to 11 Months
- Male: 1 to 2 Years
- Male: 2 to 12 Years
- Male: 13 to 20 Years
- Height to Weight Graph
Female Height to Weight Ratio’s
Average Height to Weight for Female Babies
Babies come in all shapes and sizes. If a baby’s weight is in a lower – or higher – percentile, this does not necessarily signal a problem with their growth or physical development. A weight chart can help you track your baby’s growth, as steady weight gain is a sign that your baby is healthy and feeding well.
| Age | Weight | Length |
|---|---|---|
| 0 Months | 7.3 lb. (3.31 kg) | 19.4″ (49.2 cm) |
| 1 Month | 9.6 lb. (4.35 kg) | 21.2″ (53.8 cm) |
| 2 Months | 11.7 lb. (5.3 kg) | 22.1″ (56.1 cm) |
| 3 Months | 13.3 lb. (6.03 kg) | 23.6″ (59.9 cm) |
| 4 Months | 14.6 lb. (6.62 kg) | 24.5″ (62.2 cm) |
| 5 Months | 15.8 lb. (7.17 kg) | 25.3″ (64.2 cm) |
| 6 Months | 16.6 lb. (7.53 kg) | 25.9″ (64.1 cm) |
| 7 Months | 17.4 lb. (7.9 kg) | 26.5″ (67.3 cm) |
| 8 Months | 18.1 lb. (8.21 kg) | 27.1″ (68.8 cm) |
| 9 Months | 18.8 lb. (8.53 kg) | 27.6″ (70.1 cm) |
| 10 Months | 19.4 lb. (8.8 kg) | 28.2″ (71.6 cm) |
| 11 Months | 19.9 lb. (9.03 kg) | 28.7″ (72.8 cm) |
Average Height to Weight for Female Toddlers – 12 to 23 Months
Toddlers come in all shapes and sizes, so it is not always easy to know if your child is following a healthy path regarding height and weight. However, the numbers in these charts are just a benchmark. Your toddlers’ weight and height are likely higher or lower than the average. If so, don’t worry – it doesn’t mean there’s anything wrong.
| Age | Weight | Length |
|---|---|---|
| 12 Months | 20.4 lb. (9.25 kg) | 29.2″ (74.1 cm) |
| 13 Months | 21.0 lb. (9.53 kg) | 29.6″ (75.1 cm) |
| 14 Months | 21.5 lb. (9.75 kg) | 30.1″ (76.4 cm) |
| 15 Months | 22.0 lb. (9.98 kg) | 30.6″ (77.7 cm) |
| 16 Months | 22.5 lb. (10.2 kg) | 30.9″ (78.4 cm) |
| 17 Months | 23.0 lb. (10.43 kg) | 31.4″ (79.7 cm) |
| 18 Months | 23.4 lb. (10.61 kg) | 31.8″ (80.7 cm) |
| 19 Months | 23.9 lb. (10.84 kg) | 32.2″ (81.7 cm) |
| 20 Months | 24.4 lb. (11.07 kg) | 32.6″ (82.8 cm) |
| 21 Months | 24.9 lb. (11.3 kg) | 32.9″ (83.5 cm) |
| 22 Months | 25.4 lb. (11.52 kg) | 33.4″ (84.8 cm) |
| 23 Months | 25.9 lb. (11.75 kg) | 33.5″ (85.1 cm) |
Average Height to Weight for Female Children – 2 to 12 Years
A ten-year-old girl will weigh around 70.5 pounds (31.9 kilograms) on average by age ten. Girls can weigh anywhere from 53 to 102 pounds and yet be deemed healthy because of the wide variety of weight differences among children of this age. All children grow at different rates, and it’s normal for weight and height to vary significantly between kids of the same age. What’s more important is that your child is growing steadily.
| Age | Weight | Height |
|---|---|---|
| 2 Years | 26.5 lb. (12.02 kg) | 33.7″ (85.5 cm) |
| 3 Years | 31.5 lb. (14.29 kg) | 37.0″ (94 cm) |
| 4 Years | 34.0 lb. (15.42 kg) | 39.5″ (100.3 cm) |
| 5 Years | 39.5 lb. (17.92 kg) | 42.5″ (107.9 cm) |
| 6 Years | 44.0 lb. (19.96 kg) | 45.5″ (115.5 cm) |
| 7 Years | 49.5 lb. (22.45 kg) | 47.7″ (121.1 cm) |
| 8 Years | 57.0 lb. (25.85 kg) | 50.5″ (128.2 cm) |
| 9 Years | 62.0 lb. (28.12 kg) | 52.5″ (133.3 cm) |
| 10 Years | 70.5 lb. (31.98 kg) | 54.5″ (138.4 cm) |
| 11 Years | 81.5 lb. (36.97 kg) | 56.7″ (144 cm) |
| 12 Years | 91.5 lb. (41.5 kg) | 59.0″ (149.8 cm) |
Average Height to Weight for Teenage Girls – 13 to 20 Years
Both genetic and environmental factors influence height and weight. Teenage children’s average height and weight vary by gender, age, race, ethnicity, and nationality. Throughout childhood, a child’s body begins to become more proportional. On average, girls commence puberty around ages 10 to 11 and end puberty around 15 to 17. Adolescent girls typically experience dramatic changes in weight, bone composition, height, and body fat distribution – especially through their pubescent years.
| Age | Weight | Height |
|---|---|---|
| 13 Years | 101.0 lb. (45.81 kg) | 61.7″ (156.7 cm) |
| 14 Years | 105.0 lb. (47.63 kg) | 62.5″ (158.7 cm) |
| 15 Years | 115.0 lb. (52.16 kg) | 62.9″ (159.7 cm) |
| 16 Years | 118.0 lb. (53.52 kg) | 64.0″ (162.5 cm) |
| 17 Years | 120.0 lb. (54.43 kg) | 64.0″ (162.5 cm) |
| 18 Years | 125.0 lb. (56.7 kg) | 64.2″ (163 cm) |
| 19 Years | 126.0 lb. (57.15 kg) | 64.2″ (163 cm) |
| 20 Years | 128.0 lb. (58.06 kg) | 64.3″ (163.3 cm) |
Male Height to Weight Ratio’s
Average Height to Weight for Male Babies
In the United States, the average newborn baby boy weighs 7 pounds 8 ounces (3.4 kg) and is 19.7 inches (49.9 cm) in length at birth. Most babies will gain about an ounce a day until they are three months old. By four months old, most babies have doubled their birth weight; by one year, most have tripled it.
| Age | Weight | Length |
|---|---|---|
| 0 Months | 7.4 lb. (3.3 kg) | 19.6″ (49.8 cm) |
| 1 Month | 9.8 lb. (4.4 kg) | 21.6″ (54.8 cm) |
| 2 Months | 12.3 lb. (0.01 t) | 23.0″ (58.4 cm) |
| 3 Months | 14.1 lb. (6.4 kg) | 24.2″ (61.4 cm) |
| 4 Months | 15.4 lb. (7 kg) | 25.2″ (64 cm) |
| 5 Months | 16.6 lb. (7.53 kg) | 26.0″ (66 cm) |
| 6 Months | 17.5 lb. (7.94 kg) | 26.6″ (67.5 cm) |
| 7 Months | 18.3 lb. (8.3 kg) | 27.2″ (69 cm) |
| 8 Months | 19.0 lb. (8.62 kg) | 27.8″ (70.6 cm) |
| 9 Months | 19.6 lb. (8.9 kg) | 28.3″ (71.8 cm) |
| 10 Months | 20.1 lb. (9.12 kg) | 28.8″ (73.1 cm) |
| 11 Months | 20.8 lb. (9.43 kg) | 29.3″ (74.4 cm) |
Average Height to Weight for Male Toddlers – 12 to 23 Months
All children grow at different rates. However, the following chart indicates the average growth rate for 1 to 2-year-old boys. The average weight gain will be about 4 to 6 pounds, with an average height growth of around 2 to 3 inches.
| Age | Weight | Length |
|---|---|---|
| 12 Months | 21.3 lb. (9.66 kg) | 29.8″ (75.7 cm) |
| 13 Months | 21.8 lb. (9.89 kg) | 30.3″ (76.9 cm) |
| 14 Months | 22.3 lb. (10.12 kg) | 30.7″ (77.9 cm) |
| 15 Months | 22.7 lb. (10.3 kg) | 31.2″ (79.2 cm) |
| 16 Months | 23.2 lb. (10.52 kg) | 31.6″ (80.2 cm) |
| 17 Months | 23.7 lb. (10.75 kg) | 32.0″ (81.2 cm) |
| 18 Months | 24.1 lb. (10.93 kg) | 32.4″ (82.2 cm) |
| 19 Months | 24.6 lb. (11.16 kg) | 32.8″ (83.3 cm) |
| 20 Months | 25.0 lb. (11.34 kg) | 33.1″ (84 cm) |
| 21 Months | 25.5 lb. (11.57 kg) | 33.5″ (85 cm) |
| 22 Months | 25.9 lb. (11.75 kg) | 33.9″ (86.1 cm) |
| 23 Months | 26.3 lb. (11.93 kg) | 34.2″ (86.8 cm) |
Average Height to Weight for Male Children – 2 to 12 Years
There is quite often a sudden spurt of growth in boys between 9 to 15 years of age, with a gain in weight of 8 to 10 pounds per year. However, it is important to keep in mind that many children in this age group are experiencing a pubertal growth spurt, and it may appear they are overweight (by weight-for-age) when, in fact; they are just tall.
| Age | Weight | Height |
|---|---|---|
| 2 Years | 27.5 lb. (12.47 kg) | 34.2″ (86.8 cm) |
| 3 Years | 31.0 lb. (14.06 kg) | 37.5″ (95.2 cm) |
| 4 Years | 36.0 lb. (16.33 kg) | 40.3″ (102.3 cm) |
| 5 Years | 40.5 lb. (18.37 kg) | 43.0″ (109.2 cm) |
| 6 Years | 45.5 lb. (20.64 kg) | 45.5″ (115.5 cm) |
| 7 Years | 50.5 lb. (22.9 kg) | 48.0″ (121.9 cm) |
| 8 Years | 56.5 lb. (25.63 kg) | 50.4″ (128 cm) |
| 9 Years | 63.0 lb. (28.58 kg) | 52.5″ (133.3 cm) |
| 10 Years | 70.5 lb. (32 kg) | 54.5″ (138.4 cm) |
| 11 Years | 78.5 lb. (35.6 kg) | 56.5″ (143.5 cm) |
| 12 Years | 88.0 lb. (39.92 kg) | 58.7″ (149.1 cm) |
Average Height to Weight for Teenage Boys – 13 to 20 Years
Boys start puberty around age 11 to 12 and end around 16 to 17. Youth and teenagers often have growth spurts during their growing years; during puberty, your body will grow faster than at any other time in your life. During this period, it is possible to gain and lose weight rapidly and add inches to their height – seemingly overnight.
| Age | Weight | Height |
|---|---|---|
| 13 Years | 100.0 lb. (45.36 kg) | 61.5″ (156.2 cm) |
| 14 Years | 112.0 lb. (50.8 kg) | 64.5″ (163.8 cm) |
| 15 Years | 123.5 lb. (56.02 kg) | 67.0″ (170.1 cm) |
| 16 Years | 134.0 lb. (60.78 kg) | 68.3″ (173.4 cm) |
| 17 Years | 142.0 lb. (64.41 kg) | 69.0″ (175.2 cm) |
| 18 Years | 147.5 lb. (66.9 kg) | 69.2″ (175.7 cm) |
| 19 Years | 152.0 lb. (68.95 kg) | 69.5″ (176.5 cm) |
| 20 Years | 155.0 lb. (70.3 kg) | 69.7″ (177 cm) |
Height to Weight Comparison Graph for Teen Girls and Boys Aged 13 to 19
Graph comparing the actual height and weight of boys and girls from ages 13 to 19. The solid lines represent height, and the dashed lines represent weight for both genders. This visualization highlights the differences in growth patterns between boys and girls during their teenage years. Boys generally grow taller and heavier over time, while girls reach their adult height and weight slightly earlier.
Every baby, child, and teenager is different in how they mature and grow during their teen years. Dieting for teens is not recommended, as quite often you will find they will simply “grow out” of their “baby fat” as they mature into young adults. Your pediatrician or family physician is the best person to consult if you are worried about your child’s height-to-weight ratio, as a doctor can use a medical growth chart to keep track of their progress as they mature.
*Information and data for above growth charts sourced from The World Health Organization (WHO), Gerontology Research Center (National Institutes of Health (NIH), USA), and the U.S. Centers for Disease Control and Prevention (CDC).
You may also be interested in our chart showing the height of men and women in other countries.
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Cite This Page (APA): Langtree, I. C. (2017, November 30 – Last revised: 2024, September 23). Height to Weight Ratio Chart for Infants to Teens. Disabled World. Retrieved October 22, 2024 from www.disabled-world.com/calculators-charts/height-weight-teens.php
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The National Child Measurement Programme
As part of the National Child Measurement Programme, children are weighed and measured at school.
The information is used by the NHS and your local council to plan and provide better health services for children.
What happens in the child measurement programme?
If you have a child in reception (ages 4 and 5) or year 6 (ages 10 and 11), you’ll receive a letter with more information from your local council before your child is measured.
On the day, trained staff will weigh your child and measure their height while they’re in their clothes at school.
They’ll make sure the measurements are done sensitively and in private, and your child’s results will not be shared with teachers or other children.
Why is it important that my child is measured?
Your child’s measurements will be used to check they’re in the healthy weight range. If your child is above a healthy weight, you can get support from your local council or NHS services.
Your child does not have to take part, but every child who’s measured is contributing to the national picture about how children are growing.
The more children who take part, the clearer that picture will be. The information collected helps your local NHS and local council plan and provide better health services for the children in your area.
How do I find out my child’s results?
In some areas, parents will automatically be sent their child’s results in the post.
In other areas, parents will need to contact their local council to find out their child’s measurements. You can find your local council on GOV.UK.
The letter sent by your local provider before the measurements take place will explain how you’ll be informed about your child’s results.
If you already know your child’s height and weight and want to know if they’re a healthy weight for their age, height and sex, you can check using the BMI calculator for children and teenagers. It can be used by everyone in your family.
If you’re concerned that your child might be underweight or above a healthy weight, speak to a GP, school nurse or health visitor, who can offer advice and support.
Why do we need to take the measurements?
The body mass index (BMI) measure used by healthcare professionals is a good way of finding out whether a child is a healthy weight.
By comparing your child’s weight with their age, height and sex, we can tell whether they’re growing as expected.
This is something you may have done when your child was a baby using the growth charts in the Personal Child Health Record (red book).
Once your child’s BMI has been calculated, they’ll be in 1 of 4 categories:
- underweight
- healthy weight
- overweight
- very overweight
About 1 in 5 children in reception are overweight or very overweight, rising to 1 in 3 in year 6.
Because the number of overweight children has gradually increased, we’ve slowly become used to it.
It can be difficult to tell if your child’s above a healthy weight as they may look similar to other children of their age. By recording their measurements, we can get an accurate picture.
Research shows that if your child is above a healthy weight now, they’re more likely to be above a healthy weight as an adult, which can lead to health problems in later life.
This measurement is an important way of checking how your child’s growing.
Should I share these results with my child?
The results are sent to you, so the decision about whether to talk to your child about them is entirely yours.
Some parents or carers like to discuss the results with their child and then decide together whether to make any changes to the family’s diet or activity levels.
Others decide to make small changes without telling them.
There’s no right or wrong answer, and the decision depends on your individual circumstances.
Where can I get help?
If your child’s results surprise or worry you, speak to a GP or school nurse for advice and support.
Your local council should include a phone number with the results letter. You can call this if you want further information or advice from your local NHS.
Many parents have found the tips on the Better Health – healthier families website useful in helping them make small lifestyle changes to keep their child in the healthy weight range.
If your child is above a healthy weight, see advice for parents of overweight children. This can help you decide what steps to take and provides details about the help available.
Some parents also find it helpful to keep track of their child’s growth by rechecking their child’s BMI to see if they have moved towards a healthier range as they grow.
More in Children’s weight
Page last reviewed: 26 October 2023
Next review due: 26 October 2026
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