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The average height & weight for a 3-year-old

Updated February 21, 2017

Toddlers at 3 years of age are very active and are continually growing. According to Kids Health, the average 3-year-old gains approximately four pounds and grows two to three inches taller in a single year.

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At the age of 3, there is a slight difference between boys and girls in regards to size. Though they both are about the same height, on average, girls tend to weigh a little bit less than boys at this age.


The average, and healthy height, for 3-year-old boys and girls is 2 feet, 9 inches.


At the age of 3, boys weigh a little bit more than girls, averaging 15 Kilogram. Girls at this age are a few pounds less, at an average weight of 14 Kilogram.

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About the Author

Heather Leigh Landon has been a writer since 1988 when she started her career as a stringer for "The McHenry Star News." Since then she has worked for newspapers such as "The Woodstock Independent," "The Northwest Herald" and "Press Journal." Landon graduated from William Rainey Harper College with an Associate of Applied Science in journalism.

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