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The Average Weight & Height for a 13-Year-Old

At age 13, most teenagers are well into puberty and may be in the middle of or about to embark on growth spurts. Their height and weight may go through many changes in their teen years.

Average Height and Weight for 13-Year-Old Girls

According to the Centers for Disease Control, the average height for a 13-year-old girl is 5'1 3/4" 1. Girls' normal height can range from 4'11 1/4" at the 10th percentile to 5' 5 3/4" at the 90th percentile. The average weight for girls at that age is 102 pounds, with a range from 82 pounds at the 10th percentile to 137 pounds at the 90th percentile.

Average Height and Weight for Boys

The Average Weight and Height for a 12-Year-Old

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According to the Centers for Disease Control, the average height for a 13-year-old boy is 5' 1 3/4" 1. Boys' normal height can range from 4'11" at the 10th percentile to 5' 5 3/4" at the 90th percentile. The average weight for boys at that age is 102 pounds, with a range from 80 pounds at the 10th percentile to 135 pounds at the 90th percentile.

Boys: Average Height and Weight
Age Height Weight

2 years

2 ft 11 in

30 lb 10 oz

3 years

3 ft 2 in

31 lb 12 oz

4 years

3 ft 4 in

36 lbs

5 years

3 ft 7 in

40 lbs 8 oz

6 years

3 ft 9 in

45 lb 8 oz

7 years

4 ft

50 lb 8 oz

8 years

4 ft 2 in

56 lb 8 oz

9 years

4 ft 4 in

63 lbs

10 years

4 ft 6 in

70 lb 8 oz

11 years

4 ft 8 in

78 lb 8 oz

12 years

4 ft 10 in

88 lbs

13 years

5 ft 1 in

100 lbs

14 years

5 ft 4 in

112 lbs

15 years

5 ft 7 in

123 lb 8 oz

16 years

5 ft 8 in

134 lbs

17 years

5 ft 9 in

142 lbs

18 years

5 ft 9 in

147 lb 8 oz

19 years

5 ft 9 in

152 lbs

20 years

5 ft 10 in

155 lbs

Data from the CDC

Growth Spurts

Boys reach their peak height velocity, or the height of their growth spurt, at 13.5 years, while girls reach it at 11.5. Growth spurts can last two to three years, with the average girl growing 3.5 inches per year and the average boy growing 4.5 inches during that time.

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