Normal weight for 12 year olds

The average weight for 12 year old boys is 89.7 lbs and 12 year old girls average 92.2 lbs1 The tables below show the distribution of weight by percentile of the 12 year year old population.

Current units = pounds. View this page in kilograms.

12 year old girls under 69 lbs or over 123 lbs and 12 year old boys who weigh less than 67 lbs or more than 119 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 12 year old boys
Percentile Weight
3rd 65 lbs
5th 67.4 lbs
10th 71.3 lbs
25th 79.1 lbs
50th 89.7 lbs
75th 103.2 lbs
90th 119 lbs
95th 130.7 lbs
97th 139.6 lbs
Body weight percentile chart for 12 year old girls
Percentile Weight
3rd 66.2 lbs
5th 68.7 lbs
10th 72.9 lbs
25th 81 lbs
50th 92.2 lbs
75th 106.6 lbs
90th 123.3 lbs
95th 135.9 lbs
97th 145.3 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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