Child Growth Statistics

Average Height of Boys by Age:Growth Chart and Statistics

Q: What is the average height of a boy by age?

The average height of a boy varies drastically by age. At 5 years old, the average boy is about 43.3 inches (110 cm) tall. By age 10, he reaches 54.5 inches (138.4 cm), and by age 16, the average jumps to 68.3 inches (173.5 cm) due to puberty.

Q: At what age do boys stop growing?

Most boys stop growing between the ages of 16 and 18. The growth plates in their bones fuse shortly after they finish puberty. However, some boys who are "late bloomers" may continue to grow slightly until age 20 or 21.

Q: How can I tell if my child is growing normally?

The best way to track normal growth is by plotting your child's height on a standardized growth chart over time. If his growth curve steadily follows a specific percentile line (e.g., the 50th percentile) without drastically dropping or spiking, he is growing normally.

Q: What factors affect a boy's height?

Genetics dictate roughly 80% of a boy's final height. The remaining 20% is determined by environmental factors, most notably childhood nutrition (especially protein and calcium), sleep quality, and overall health and hormone levels.

Q: When should I be concerned about my child's height?

Consult a pediatrician if your child's height drops across two major percentile lines on his growth chart, if he is growing less than 2 inches per year after age 3, or if he is significantly shorter than both parents were at his age.

Abstract visualization of a boy's growth from childhood to adolescence

<strong style="color:#fff;">Wondering if your son is growing properly?</strong> It is completely normal for parents to worry when their child appears shorter than his classmates, or when his clothing sizes refuse to change. The journey from childhood to adulthood is filled with sudden growth spurts and frustrating plateaus that can leave parents feeling unsure. Without access to accurate data, comparing your child's development to his peers can easily lead to unnecessary anxiety. Boys grow at incredibly different rates. What seems unusually short at age ten can transform into a towering height by age sixteen once puberty finally begins.

To help you navigate this journey with confidence, this comprehensive guide breaks down the exact <strong style="color:#fff;">average height of boys by age</strong> using the latest standardized medical data. We will walk you through precisely how to read official growth charts, explaining what percentiles actually mean for your child's long-term physical development. Beyond just the numbers, we will outline exactly what critical factors—from genetics to deep sleep and childhood nutrition—dictate your son's final adult stature. Whether you simply want to track his milestones or know when a doctor visit is necessary, you will find all the answers here.

Quick Answer: What Is the Average Height of Boys?

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Age	Average Height (CM)	Average Height (Feet/Inches)
averageHeightBoys.quickAnswer.row1	110.0 cm	3 ft 7.3 in
averageHeightBoys.quickAnswer.row2	138.4 cm	4 ft 6.5 in
averageHeightBoys.quickAnswer.row3	156.2 cm	5 ft 1.5 in
averageHeightBoys.quickAnswer.row4	173.5 cm	5 ft 8.3 in
averageHeightBoys.quickAnswer.row5	176.1 cm	5 ft 9.3 in

How Average Height for Boys Is Measured

Growth Charts Explained

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Height Measurement Standards

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Average Height of Boys by Age

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Average Height - Boys by Age

Age	Height (inches)	Height (cm)
averageHeightBoys.byAge.age1	34.2 in	86.9 cm
averageHeightBoys.byAge.age2	40.3 in	102.3 cm
averageHeightBoys.byAge.age3	45.5 in	115.6 cm
averageHeightBoys.byAge.age4	50.1 in	127.3 cm
averageHeightBoys.byAge.age5	54.5 in	138.4 cm
averageHeightBoys.byAge.age6	58.7 in	149.1 cm
averageHeightBoys.byAge.age7	64.0 in	162.6 cm
averageHeightBoys.byAge.age8	67.6 in	171.6 cm
averageHeightBoys.byAge.age9	69.1 in	175.5 cm

Average Height of 1-Year-Old Boys

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Average Height of 2-Year-Old Boys

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Average Height of 5-Year-Old Boys

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Average Height of 10-Year-Old Boys

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Average Height of 13-Year-Old Boys

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Average Height of 16-Year-Old Boys

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Average Height of 18-Year-Old Boys

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Average Height of Boys Growth Chart

CDC Male Growth Percentiles (Ages 2-20)

Height Percentiles Explained

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Understanding Growth Patterns

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Factors That Affect a Boy's Height

Genetics

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Nutrition

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Sleep and Physical Activity

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Overall Health

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When Do Boys Grow the Most?

Childhood Growth

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Puberty Growth Spurts

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When Boys Stop Growing

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Is My Son Taller or Shorter Than Average?

Comparing Height Percentiles

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When to Consult a Doctor

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How to Measure a Boy's Height Accurately

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Average Height of Boys Around the World

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United States

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United Kingdom

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Pakistan

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India

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Average Height of Boys vs Girls

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Peak Adult Gap (Ages 18+)

162.1 cm

Girls

Final Gap
14.0 cm
(5.5 inches)

176.1 cm

Boys

Common Height Conversions

CM to Feet & Inches

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Feet & Inches to CM

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Frequently Asked Questions

What is the average height of a boy by age?

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At what age do boys stop growing?

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How can I tell if my child is growing normally?

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What factors affect a boy's height?

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When should I be concerned about my child's height?

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Compare Heights Using Our Tools

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Use Our CM to Feet Calculator