Normal weight for 9 year olds

The average weight for 9 year old boys is 63.2 lbs and 9 year old girls average 64.2 lbs1 The tables below show the distribution of weight by percentile of the 9 year year old population.

Current units = pounds. View this page in kilograms.

9 year old girls under 49 lbs or over 84 lbs and 9 year old boys who weigh less than 50 lbs or more than 81 lbs may want to consult a doctor. The American Academy of Pediatrics recommends that children who's weight is outside the 5th or 85th percentiles seek professional advice to determine if further evaluation is needed2.

Body weight percentile chart for 9 year old boys
Percentile Weight
3rd 48.7 lbs
5th 50.1 lbs
10th 52.4 lbs
25th 56.9 lbs
50th 63.2 lbs
75th 71.4 lbs
90th 81.3 lbs
95th 89 lbs
97th 94.9 lbs
Body weight percentile chart for 9 year old girls
Percentile Weight
3rd 47.6 lbs
5th 49.2 lbs
10th 51.9 lbs
25th 57.1 lbs
50th 64.2 lbs
75th 73.4 lbs
90th 84.1 lbs
95th 92.2 lbs
97th 98.3 lbs

Source Citations
  1. Robert J. Kuczmarski Dr.P.H. et al., Centers for Disease Control and Prevention, U.S. Department of Health & Human Services 2000 CDC Growth Charts for the United States: Methods and Development
  2. American Academy of Pediatrics Is Your Child Overweight?

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