Weight Chart for Boys, Birth to 36 Months
Find your child's weight percentile by age.
For children under 2, the CDC now recommends the World Health Organization (WHO) growth standards. This chart is the CDC's earlier version. Ask your child's doctor which chart they use, or see the WHO-based charts from the CDC.
How to read the chart
The curved lines are weight percentiles. The top line is the 95th percentile: 95% of boys that age weigh that much or less.
Age runs along the bottom, from birth to 36 months. Weight is on the left and right sides, in pounds and kilograms.
To find your child's percentile, find his weight on either side and read across to the line for his age. See where that point falls among the percentile lines.
For example, a 24-month-old boy who weighs 28 pounds (12.8 kg) is right at the 50th percentile.
At birth, 95% of boys weigh less than 10 pounds (about 4.6 kg), and 5% weigh less than 5.5 pounds (2.6 kg). At 36 months, 95% weigh less than 38 pounds (17.2 kg), and 5% weigh less than 26.5 pounds (12 kg).
Consult your doctor if you are concerned about your child's weight.
About this chart
The chart comes from the Centers for Disease Control and Prevention's National Center for Health Statistics. We converted it from the CDC's PDF into a web image. Print the PDF version if you'd like to record your child's weight.