Two growth charts
For babies and toddlers under 2, we use World Health Organization growth charts. From age 2, we use CDC growth charts.
Child weight by age
Choose your child's age to see typical weights for boys and girls.
Typical weight by age
Select an age to see the full percentile table for boys and girls.
| Age | Boys, median | Girls, median |
|---|---|---|
| At birth | 7.4 lbs / 3.3 kg | 7.1 lbs / 3.2 kg |
| 1 month | 9.9 lbs / 4.5 kg | 9.2 lbs / 4.2 kg |
| 2 months | 12.3 lbs / 5.6 kg | 11.3 lbs / 5.1 kg |
| 3 months | 14.1 lbs / 6.4 kg | 12.9 lbs / 5.8 kg |
| 4 months | 15.4 lbs / 7.0 kg | 14.2 lbs / 6.4 kg |
| 5 months | 16.6 lbs / 7.5 kg | 15.2 lbs / 6.9 kg |
| 6 months | 17.5 lbs / 7.9 kg | 16.1 lbs / 7.3 kg |
| 7 months | 18.3 lbs / 8.3 kg | 16.8 lbs / 7.6 kg |
| 8 months | 19.0 lbs / 8.6 kg | 17.5 lbs / 7.9 kg |
| 9 months | 19.6 lbs / 8.9 kg | 18.1 lbs / 8.2 kg |
| 10 months | 20.2 lbs / 9.2 kg | 18.7 lbs / 8.5 kg |
| 11 months | 20.8 lbs / 9.4 kg | 19.2 lbs / 8.7 kg |
| 12 months | 21.3 lbs / 9.6 kg | 19.7 lbs / 8.9 kg |
| 13 months | 21.8 lbs / 9.9 kg | 20.2 lbs / 9.2 kg |
| 14 months | 22.3 lbs / 10.1 kg | 20.7 lbs / 9.4 kg |
| 15 months | 22.7 lbs / 10.3 kg | 21.2 lbs / 9.6 kg |
| 16 months | 23.2 lbs / 10.5 kg | 21.6 lbs / 9.8 kg |
| 17 months | 23.7 lbs / 10.7 kg | 22.1 lbs / 10.0 kg |
| 18 months | 24.1 lbs / 10.9 kg | 22.6 lbs / 10.2 kg |
| 19 months | 24.6 lbs / 11.1 kg | 23.0 lbs / 10.4 kg |
| 20 months | 25.0 lbs / 11.3 kg | 23.5 lbs / 10.6 kg |
| 21 months | 25.5 lbs / 11.5 kg | 23.9 lbs / 10.9 kg |
| 22 months | 25.9 lbs / 11.8 kg | 24.4 lbs / 11.1 kg |
| 23 months | 26.3 lbs / 12.0 kg | 24.8 lbs / 11.3 kg |
| 24 months From 2 years, numbers come from CDC charts | 28.1 lbs / 12.7 kg | 26.8 lbs / 12.1 kg |
| 2 years | 28.1 lbs / 12.7 kg | 26.8 lbs / 12.1 kg |
| 3 years | 31.8 lbs / 14.4 kg | 30.7 lbs / 13.9 kg |
| 4 years | 36.0 lbs / 16.3 kg | 35.0 lbs / 15.9 kg |
| 5 years | 40.8 lbs / 18.5 kg | 39.7 lbs / 18.0 kg |
| 6 years | 45.8 lbs / 20.8 kg | 44.8 lbs / 20.3 kg |
| 7 years | 51.1 lbs / 23.2 kg | 50.4 lbs / 22.9 kg |
| 8 years | 56.8 lbs / 25.8 kg | 56.8 lbs / 25.8 kg |
| 9 years | 63.2 lbs / 28.7 kg | 64.2 lbs / 29.1 kg |
| 10 years | 70.7 lbs / 32.1 kg | 72.9 lbs / 33.1 kg |
| 11 years | 79.5 lbs / 36.1 kg | 82.4 lbs / 37.4 kg |
| 12 years | 89.7 lbs / 40.7 kg | 92.2 lbs / 41.8 kg |
| 13 years | 101.0 lbs / 45.8 kg | 101.4 lbs / 46.0 kg |
| 14 years | 112.9 lbs / 51.2 kg | 109.1 lbs / 49.5 kg |
| 15 years | 124.5 lbs / 56.5 kg | 114.9 lbs / 52.1 kg |
| 16 years | 134.7 lbs / 61.1 kg | 118.9 lbs / 53.9 kg |
| 17 years | 142.6 lbs / 64.7 kg | 121.7 lbs / 55.2 kg |
| 18 years | 148.3 lbs / 67.3 kg | 124.0 lbs / 56.2 kg |
| 19 years | 152.5 lbs / 69.2 kg | 126.4 lbs / 57.4 kg |
| 20 years | 155.6 lbs / 70.6 kg | 128.4 lbs / 58.2 kg |
Weight by age
The wider shaded bands show the 5th to 95th percentile. The narrower bands show the 25th to 75th.
- Boys, median
- Girls, median
- Boys, 5th to 95th percentile
- Boys, 25th to 75th percentile
- Girls, 5th to 95th percentile
- Girls, 25th to 75th percentile
How to read your result
The usual range
Most healthy children are between the 5th and 95th percentiles, but many healthy children are outside it. The 50th percentile is the middle, not a target.
One weight isn't a grade
Doctors look at how a child grows over several checkups, along with length or height. One percentile isn't a diagnosis.
How to measure
- Weigh your child in light clothing, without shoes.
- Write down the weight to one decimal place, in pounds or kilograms.
- Use the same scale at the same time of day when you compare.
Common questions
Short answers about how these calculators work.
In the US, doctors use World Health Organization growth charts from birth to 2 years and CDC growth charts from age 2. We follow the same switch.
Not from one number. A percentile shows where a child falls compared with others the same age. Your child's doctor looks at it along with height, growth over time and a checkup.
Sources
Where these numbers come from
- WHO Child Growth Standards: Weight-for-age percentiles, birth to 5 years (opens in a new tab) - World Health OrganizationWeight growth charts for babies and toddlers under 2
- 2000 CDC growth charts for the United States (opens in a new tab) - CDC, 2000Growth charts for children 2 and older
Medical disclaimer Healthly is for general information only. It isn't medical advice and can't diagnose or treat any condition. Talk with your doctor about your own numbers. If you think you're having a medical emergency, call 911 or your local emergency number. How we get our numbers