What is the average height for a child by age?

Average height also changes rapidly with age. Median boys are about 49.9 cm at birth, 75.7 cm at 1 year, 109.9 cm at 5 years, 138.5 cm at 10 years, and 170.1 cm at 15 years. Girls are similar until puberty, briefly pulling ahead around ages 11 to 13 before boys catch up and exceed girls by about age 14 to 15.

Is my child's height and weight normal for their age?

Any measurement between the 3rd and 97th percentile is generally within the broad reference range. More important than one measurement is whether your child follows a consistent curve over time. Use the personalized calculator above to estimate percentiles, then ask your pediatrician if the trend changes quickly or does not match your child's overall health.

At what age do boys and girls have the same height?

Boys and girls are roughly similar in height through about age 10. Girls often start their puberty growth spurt around age 10 to 11 and may be taller than boys between about 11 and 13. Boys usually begin their growth spurt later, around age 12 to 13, and surpass girls by about age 14.

How much should a child grow per year?

Growth rate depends on age. Babies often grow about 2.5 cm per month in the first 6 months and about 1.3 cm per month from 6 to 12 months. Ages 1 to 3 often bring about 10 to 12 cm per year, school-age children often grow about 5 to 6 cm per year, and puberty can bring 7 to 12 cm per year at peak velocity.

Average Height and Weight by Age: The Complete Reference Chart for Boys & Girls (Birth to 20 Years)

Name: Average Height and Weight by Age Chart
Brand: Growth Chart Calculator
Availability: InStock

This complete height and weight chart by age brings WHO infant standards and CDC child growth references into one interactive page. Use it to compare average height and weight by age, view full percentile ranges, visualize growth curves, and run a quick personalized check without digging through static PDFs.

CDC Growth Charts 2000WHO Child Growth Standards 2006AAP standard selection guidance

Sex

Age

Units

Standard

Average Height and Weight by Age — Interactive Table

Default cells show the 50th percentile with the P25-P75 range in parentheses. Click any row to expand the full P3-P97 percentile range for height and weight.

Age

Boys Height

Boys Weight

Girls Height

Girls Weight

Source

49.9 cm (48.6 cm-51.2 cm)

3.3 kg (3 kg-3.7 kg)

49.1 cm (47.9 cm-50.4 cm)

3.2 kg (2.9 kg-3.6 kg)

WHO

Birth — Full Percentile Data

Measure	p3	p10	p25	p50	p75	p90	p97
Boys Ht	46.1 cm	47.5 cm	48.6 cm	49.9 cm	51.2 cm	52.3 cm	53.7 cm
Boys Wt	2.5 kg	2.8 kg	3 kg	3.3 kg	3.7 kg	4 kg	4.4 kg
Girls Ht	45.4 cm	46.8 cm	47.9 cm	49.1 cm	50.4 cm	51.5 cm	52.9 cm
Girls Wt	2.4 kg	2.7 kg	2.9 kg	3.2 kg	3.6 kg	3.9 kg	4.2 kg

At birth, values between the middle percentile bands are common. A value outside that middle band is not automatically abnormal, but the child's trend and body proportions matter.

54.7 cm (53.4 cm-56 cm)

4.5 kg (4.1 kg-4.9 kg)

53.7 cm (52.4 cm-55 cm)

4.2 kg (3.8 kg-4.6 kg)

WHO

58.4 cm (57.1 cm-59.8 cm)

5.6 kg (5.1 kg-6 kg)

57.1 cm (55.7 cm-58.4 cm)

5.1 kg (4.7 kg-5.6 kg)

WHO

61.4 cm (60.1 cm-62.8 cm)

6.4 kg (5.9 kg-6.9 kg)

59.8 cm (58.4 cm-61.2 cm)

5.8 kg (5.4 kg-6.4 kg)

WHO

63.9 cm (62.5 cm-65.3 cm)

7 kg (6.5 kg-7.6 kg)

62.1 cm (60.6 cm-63.5 cm)

6.4 kg (5.9 kg-7 kg)

WHO

65.9 cm (64.5 cm-67.3 cm)

7.5 kg (7 kg-8.1 kg)

64 cm (62.5 cm-65.5 cm)

6.9 kg (6.4 kg-7.5 kg)

WHO

67.6 cm (66.2 cm-69.1 cm)

7.9 kg (7.4 kg-8.5 kg)

65.7 cm (64.2 cm-67.3 cm)

7.3 kg (6.7 kg-7.9 kg)

WHO

72 cm (70.5 cm-73.5 cm)

8.9 kg (8.3 kg-9.6 kg)

70.1 cm (68.5 cm-71.8 cm)

8.2 kg (7.6 kg-8.9 kg)

WHO

75.7 cm (74.1 cm-77.4 cm)

9.6 kg (9 kg-10.4 kg)

74 cm (72.3 cm-75.8 cm)

8.9 kg (8.2 kg-9.7 kg)

WHO

79.1 cm (77.4 cm-80.9 cm)

10.3 kg (9.6 kg-11.1 kg)

77.5 cm (75.7 cm-79.4 cm)

9.6 kg (8.8 kg-10.4 kg)

WHO

82.3 cm (80.4 cm-84.1 cm)

10.9 kg (10.1 kg-11.8 kg)

80.7 cm (78.7 cm-82.7 cm)

10.2 kg (9.4 kg-11.1 kg)

WHO

87.8 cm (85.8 cm-89.9 cm)

12.2 kg (11.3 kg-13.1 kg)

86.4 cm (84.2 cm-88.6 cm)

11.5 kg (10.6 kg-12.5 kg)

WHO

Data source: CDC Growth Charts (2000) for ages 2-20; WHO Child Growth Standards (2006) for birth to 2 years. Values shown are 50th percentile averages with 25th-75th percentile range in parentheses.

Growth Curve Visualization

Compare height or weight curves across childhood. The chart uses the same filters as the table and can show boys, girls, or both median curves together.

Text alternative: the chart plots P3, P15, P50, P85, and P97 reference curves by age. The P15-P85 area is treated as a common healthy reference band, while puberty ranges are highlighted for timing context.

Results will appear here

Submit the form to add a star marker to the chart, highlight the closest table row, and see height and weight percentile estimates.

How to Read This Chart

Start by choosing the child's sex and age range in the filter bar. Then find the matching row in the interactive table. The default values show P50, the median or “average” reference point, with the middle P25-P75 range in parentheses.

Select sex, age range, units, and standard.
Find the child's age row and read the median height and weight.
Expand the row if you want the full P3-P97 percentile range.

P50 is not a goal. A child at P15, P50, or P85 can all be growing normally if the pattern is stable and matches family build. Trend matters more than one measurement. For exact child-specific results, use the growth chart calculator.

Data Sources

This chart uses WHO Child Growth Standards for birth to 24 months, the standard recommended by the American Academy of Pediatrics for children under 2. For ages 2-20, it uses CDC Growth Charts, the most widely used pediatric growth reference in the United States.

How to Interpret Your Child's Measurements

What Percentile Means (and What It Doesn't)

If your child is at the 60th percentile for height, it means they are taller than 60% of children their age and sex in the reference chart. It does not mean they scored 60 out of 100. Percentiles describe relative position, not worth, effort, nutrition quality, or parenting success. A child at the 10th percentile who grows consistently can be just as healthy as one at the 90th percentile.

Height and Weight Together: Why Both Matter

Weight always needs height context. A tall child may weigh more than peers and still be perfectly proportioned, while a shorter child may weigh less and remain healthy. If you are asking whether weight fits height, use the weight for height calculator. For ages 2-20, the BMI percentile calculator is the usual screening tool for body mass relative to height.

When a Percentile Change Is Worth Noticing

Small movement from one visit to the next is common, especially in infancy and puberty. More attention is warranted when a child crosses two major percentile lines, shows decline across two or three measurements, or has very different height and weight percentiles that suggest a nutrition or health issue. When in doubt, ask your pediatrician rather than trying to diagnose from a chart.

Average Height and Weight by Age: Key Milestones

Infant Growth (0-12 Months): The Fastest Year

The first year is the fastest growth period after birth. Many full-term babies start near 50 cm and 3.3 kg. By 6 months, median boys are around 68 cm and 7.9 kg, and by 12 months many babies are near 76 cm and about triple birth weight. Breastfed babies may track differently from formula-fed babies; WHO standards were designed with breastfed infants in mind.

In the first year, babies typically triple birth weight, grow 25-30 cm in length, and gain fastest in the first 3 months.

Toddler Growth (1-3 Years): Slowing Down, Still Fast

Growth slows after the first birthday, which often explains the classic toddler appetite dip. Around age 2, median height is near 87 cm for boys and 86 cm for girls. By age 3, many children are near 95 cm and 14 kg. For age-specific weight context, see average weight for a 3 year old.

School Age Growth (3-10 Years): Steady and Predictable

The school-age years are usually the calmest and most predictable. Many children grow about 5-6 cm and gain about 2-3 kg per year. Boys and girls remain similar until the early puberty window. For more context, compare average weight for a 6 year old with height and BMI on the full chart.

Puberty Growth (10-18 Years): The Second Surge

Puberty creates the second major growth surge. Girls often accelerate around ages 10-13 and may briefly exceed boys in median height and weight. Boys often peak later, around ages 12-15, and then surpass girls in height. Sudden changes in height, weight, and appetite can be normal during this window. For final-height context, try the child height predictor.

What Is a Healthy Weight for My Child's Height?

Healthy weight is not just weight by age. It is weight in relation to height, age, sex, and growth trend. A tall 10-year-old may weigh more than the average child and still be proportionate, while a shorter child may weigh less and remain healthy. For children over age 2, BMI-for-age is commonly used to screen underweight, overweight, and obesity risk. For younger children, weight-for-height is often the more direct body-proportion tool. If you are comparing with average weight for a 10 year old, check height context too.

Check BMI Percentile →Weight for Height Calculator →

When to Talk to Your Pediatrician

Height or weight crosses two major percentile lines upward or downward.
Weight does not increase for 3 months in a child under age 2.
Puberty signs appear very early or seem very delayed.
Your child reports persistent fatigue, headaches, poor appetite, vomiting, or chronic diarrhea.
You feel concerned about the pattern, even if a single number looks “normal.”

Remember: growth charts are screening tools, not report cards. Your pediatrician is the best person to interpret your child's growth in the context of overall health and family history.

Medical Disclaimer

This page provides general reference information based on CDC and WHO population data. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult your child's pediatrician with questions about growth and development.

Frequently Asked Questions

These answers cover average height and weight by age, normal ranges, puberty timing, and expected growth velocity. For general chart reading help, see the growth percentile explained guide.

Average weight varies significantly by age and sex. Key median milestones for boys are about 3.3 kg at birth, 10.2 kg at 1 year, 18.3 kg at 5 years, 32.2 kg at 10 years, and 56.7 kg at 15 years. Girls follow a similar pattern and may briefly surpass boys around ages 11 to 13 because puberty starts earlier.

Average Height and Weight by Age: The Complete Reference Chart for Boys & Girls (Birth to 20 Years)

Average Height and Weight by Age — Interactive Table

Growth Curve Visualization

Check Your Child's Growth

How to Read This Chart

How to Interpret Your Child's Measurements

What Percentile Means (and What It Doesn't)

Height and Weight Together: Why Both Matter

When a Percentile Change Is Worth Noticing

Average Height and Weight by Age: Key Milestones

Infant Growth (0-12 Months): The Fastest Year

Toddler Growth (1-3 Years): Slowing Down, Still Fast

School Age Growth (3-10 Years): Steady and Predictable

Puberty Growth (10-18 Years): The Second Surge

What Is a Healthy Weight for My Child's Height?

When to Talk to Your Pediatrician

Frequently Asked Questions

Related Growth References

Height Percentile Calculator

Weight Percentile Calculator

Baby Growth Chart

Child Growth Chart

Average Height and Weight by Age: The Complete Reference Chart for Boys & Girls (Birth to 20 Years)

Average Height and Weight by Age — Interactive Table

Growth Curve Visualization

Check Your Child's Growth

How to Read This Chart

How to Interpret Your Child's Measurements

What Percentile Means (and What It Doesn't)

Height and Weight Together: Why Both Matter

When a Percentile Change Is Worth Noticing

Average Height and Weight by Age: Key Milestones

Infant Growth (0-12 Months): The Fastest Year

Toddler Growth (1-3 Years): Slowing Down, Still Fast

School Age Growth (3-10 Years): Steady and Predictable

Puberty Growth (10-18 Years): The Second Surge

What Is a Healthy Weight for My Child's Height?

When to Talk to Your Pediatrician

Frequently Asked Questions

What is the average weight for a child by age?−

What is the average height for a child by age?+

Is my child's height and weight normal for their age?+

At what age do boys and girls have the same height?+

How much should a child grow per year?+

Related Growth References

Height Percentile Calculator

Weight Percentile Calculator

Baby Growth Chart

Child Growth Chart