Normal weight for 18 month olds (kg)



The average weight for 18 month old toddler boys is 11.8 kg and 18 month old toddler girls average 11.1 kg1 The tables below show the distribution of weight by percentile of the 18 month year old population.

Current units = kilograms. View this page in pounds.

Body weight percentile table for 18 month old toddler boys

Percentile Weight
3rd 9.7 kg
5th 9.9 kg
10th 10.3 kg
25th 11 kg
50th 11.8 kg
75th 12.7 kg
90th 13.6 kg
95th 14.1 kg
97th 14.5 kg

Body weight percentile table for 18 month old toddler girls

Percentile Weight
3rd 9.2 kg
5th 9.4 kg
10th 9.7 kg
25th 10.3 kg
50th 11.1 kg
75th 11.9 kg
90th 12.7 kg
95th 13.3 kg
97th 13.7 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?


Change age

-1 mo +1 mo