GITNUX MARKETDATA REPORT 2024

Statistics About The Average Height 18 Month Old Boy

The average height of an 18-month-old boy is typically around 31 inches.

Statistic 1

"The average height for an 18-month-old boy in the U.S is approximately 32.8 inches."

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Statistic 2

"Approximately 50% of 18-month-old boys are between 31.2 and 34.3 inches tall."

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Statistic 3

"5% percentile for height in 18-month-old boys is 29.5 inches."

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Statistic 4

"95% percentile for height in 18-month-old boys is 35.9 inches."

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Statistic 5

"10% of 18-month-old boys in the USA are less than 30.3 inches tall."

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Statistic 6

"10% of 18-month-old boys in the USA are taller than 35.0 inches."

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Statistic 7

"At 18 months, girls tend to be about 0.2 inches shorter than boys."

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Statistic 8

"The average weight for an 18-month-old boy of average height is approximately 24.3 lbs."

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Statistic 9

"The average head circumference for an 18-month-old boy of average height is approximately 48 cm."

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Statistic 10

"At 18 months, the 97th percentile for boys’ height is about 36.6 inches."

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Statistic 11

"The 3rd percentile for 18 months old boy's height is slightly over 28.9 inches."

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Statistic 12

"Most 18-month-old boys will have approximately doubled their birth height."

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Statistic 13

"By 18 months, boys tend to be 0.8 inches taller than girls on average."

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Statistic 14

"The standard deviation for height in 18-month-old boys is about 1.2 inches."

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Statistic 15

"At 18 months of age, most boys will have a growth rate near 13 cm per year."

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Statistic 16

"Asian boys aged 18 months have an average height of 32.5 inches."

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Statistic 17

"The average height of 18-month-old African boys is typically slightly lower, at 32.4 inches."

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Statistic 18

"The average height for 18-month-old boys in Australia is 32.8 inches, similar to the global average."

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Statistic 19

"Average height for 18-month-old boys in India is 80.4 cm or approximately 31.6 inches."

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