Normal weight for 11 month olds (kg)

The average weight for 11 month old baby boys is 10.2 kg and 11 month old baby girls average 9.4 kg1 The tables below show the distribution of weight by percentile of the 11 month year old population.

Current units = kilograms. View this page in pounds.

11 month old girls under 8 kg or over 11 kg and 11 month old boys who weigh less than 8 kg or more than 12 kg may want to consult with 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 table for 11 month old baby boys

Percentile Weight
3rd 8.3 kg
5th 8.5 kg
10th 8.8 kg
25th 9.4 kg
50th 10.2 kg
75th 11 kg
90th 11.7 kg
95th 12.2 kg
97th 12.6 kg

Body weight percentile table for 11 month old baby girls

Percentile Weight
3rd 7.7 kg
5th 7.9 kg
10th 8.2 kg
25th 8.7 kg
50th 9.4 kg
75th 10.1 kg
90th 10.8 kg
95th 11.2 kg
97th 11.5 kg

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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